14 common faults of Winweb Mail Server

Source: Internet
Author: User
Tags tmp file mx record metabase

1. Why do I always fail to send emails to external internet?
I. Reasons for DNS:
In most cases, the failure to send emails to an external internet mailbox is caused by improper DNS settings or abnormal operation of the used DNS server. You can click the icon in the lower right corner of the server, and select "service" in the pop-up menu to view the configured DNS server address ). You need to confirm:
1. Whether the DNS server address is set.
2. Whether the configured DNS server address is valid.
3. Whether the DNS server works properly.

You can try the following DNS addresses or directly ask your local ISP service provider:
205.252.144.228
202.106.127.1
216.239.32.10
168.95.1.1
202.102.192.68
202.106.0.20
202.96.199.20.
202.106.196.115
202.96.96.235
202.103.226.68
202.96.96.236
202.103.224.68
210.162.122.114

Solution:
1. In this case, it is a good idea to change the DNS address. After the DNS is changed successfully, you must restart the WinWebMail service to make the change take effect ).
2. Enter another alternate DNS address. In this way, when the preferred DNS is suspended, WinWebMail can automatically use the backup DNS server to parse and deliver the target address, thus ensuring smooth communication.
3. In most cases, do not use the IP address of a machine in the LAN such as 10.96.0.1 as the DNS server address.
4. To confirm that the selected DNS can be used properly, you can ping the DNS address on the server. When you can ping the DNS, you can think that the DNS can work properly. Select the DNS with the shortest response time first, because this will greatly increase the external mail speed.


Ii. Reasons Why UDP communication cannot be performed externally due to system security settings or firewall settings:
Because the email system needs to perform UDP communication with the DNS server for address resolution of the target email server, you must allow the UDP packet to pass. If you want to seal the UDP port for security reasons, you must also open UDP ports above 1024.


3. Enable the email scanning function in the anti-virus software on the server:
Solution: Disable the email scan function in the server-side anti-virus software.


4. Too many spam, blocking the sending process on the server will also cause external mail failure:
Solution: refer to the detailed description on this page.


5. Improper configuration of anti-virus software:
You must correctly set the installed anti-virus software before working properly with the mail system. On the server side, we recommend that you Install McAfee VirusScan or Norton.
How to Use McAfee to perform email virus detection
How to configure Norton for email virus detection
When anti-virus software is installed on the server, \ mail and all its subdirectories under the installation directory of the mail system must be excluded from the anti-virus software's anti-virus configuration; otherwise, mail count errors may occur, this creates the illusion that the mailbox is full.


6. If your email domain name is not resolved to the IP address of the WinWebMail server installed, or the HELO information is not correctly set, some mail servers may fail to be delivered:
Solution: refer to the detailed description on this page.


7. If the IP address of your server is blacklisted by the Anti-Spam organization, it will also make it impossible to send emails to external parties, especially to foreign countries:
Work und: You can submit your email server IP address in the http://rbls.org/, the background color in the query results is red is to add your IP address to the blacklist of the site, you can apply for removal from this website. Or open it directly:
Http://www.robtex.com/rbl/1.1.1.1.html
Replace 1.1.1.1 with the IP address of your email server.


8. To prevent spam, many email servers outside China will filter emails containing Chinese character sets, or directly reject all emails from domestic IP segments, this will also cause sending failure to foreign email servers.


Note: In order to solve the mail sending failure problem more effectively, you should carefully analyze the cause of the error after the email address in the Bounce Message and solve it. When similar to the following Bounce Message content, the red part is the reason for rejection:
You cannot ship your email to the following address:
User@domain.com: 553 Connection block by DNSBL, [http://www.spamhaus.org/query/bl? Ip = xx. xxx. x. xx]
The email is returned in English because the IP address of your email server is blacklisted by the Anti-Spam organization www.spamhaus.org. Then you can http://www.spamhaus.org/query/bl according to the address here? Ip = xx. xxx. x. xx go to the website and apply to remove the ip address of your email server from the blacklist.


Enable the following features to improve the mail sending success rate:
Use the DNS root server to query the target address. You can click the icon in the lower-right corner of the server, and enable "query from DNS root server when the DNS query MX record fails" in the "service" menu.
Use the relay server to forward failed emails. You can click the icon in the lower-right corner of the server, and enable and correctly set the "use relay server to forward mail" item in "system settings"> "sending and receiving rules" in the pop-up menu.

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2. Why can't I receive emails from external mailboxes such as yahoo.com or hotmail.com?
To successfully receive emails from the Internet, you must do the following:
1. You must have a valid domain name on the Internet. For example, mydomain.com)
2. Resolve the MX record of this domain name to the server address where WinWebMail is installed correctly if there is no MX record.
3. The WinWebMail mail server successfully starts the SMTP service on port 25 of the IP address.


Common problems include:
Ports 1 and 25 are occupied:
When other email server software or some anti-virus and firewall software is installed, port 25 is often occupied, in this way, WinWebMail will not have the opportunity to process emails sent to port 25 of the server. Run the following command to check whether port 25 is WinWebMail:

Telnet Server IP address 25

For example: 220 ESMTP on WinWebMail [x. x] ready. http://www.winwebmail.com
Otherwise, you need to uninstall or Disable other software that uses port 25 and restart the WinWebMail service program.

The most common situation is that the Microsoft SMTP service (Simple Mail Transpor Protocol) in IIS on the server is not uninstalled, resulting in a port 25 conflict, resulting in WinWebMail failure to work normally.
Solution: uninstall or disable Microsoft's SMTP service, and restart the WinWebMail service program.

Ii. domain name resolution problems:
Please do the following test to determine if your domain name resolution is faulty, assuming that your email address is: user@domain.com, you need to confirm that domain.com's MX record or A record is directed to the correct address, you can view it on the following page:
Http://centralops.net/co/NsLookup.vbs.asp

1. Take yahoo.com as an example. Find the MX record address IN the returned information, similar to the following red part: yahoo.com in mx preference: 1
Exchange: mx1.mail.yahoo.com
6090 s (1 h 41 m 30 s)

2. if your domain name does not have an MX record, you can use the ping domain.com method to retrieve the returned A record address, or search for the record address in the returned information above: yahoo.com in a 66.218.71.198 690 s (11 m 30 s)

Check whether the MX or A record of your domain name is correct if both of them are based on the MX record.


3. Excessive spam:
When too many spam mails are sent, a large amount of system resources will be occupied, resulting in the failure to send or receive normal emails in a timely manner.
Solution: refer to the detailed description on this page.

4. Enable the email scanning function in the anti-virus software on the server:
Solution: Disable the email scan function in the server-side anti-virus software.

5. firewall software does not open port 25 or other improper settings:
Solution: refer to "firewall settings.

Note: carefully analyzing the cause of the error after the email address in the bounce message can help solve the problem.

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3. Why do I always report a Password error when logging on to WebMail (the error message for Versions later than 3.7.7.1 is: Deny Access From IP address XXX. X)
There are several possibilities:

1. Folder permissions are not correctly set:
For example, WinWebMail is installed in the D: \ WinWebMail directory.
After setting the permission, restart IIS to make the setting take effect.
D: \ WinWebMail (and all its subdirectories) Users or Everyone full control
D: \ root directory
Users read

2. Events that result from improper configuration after anti-virus software is installed. Uninstall the anti-virus software and restart the server. After determining the cause of the problem, reinstall and set the anti-virus software to disable all real-time monitoring functions, such as mail monitoring, file monitoring, and memory monitoring ).

3. In IIS 5.0, it may be because the "Application protection" option of the IIS Site or virtual directory is not set.
As shown in "application Protection", you should select "low IIS Process)" to ensure that your system can be properly logged on through the browser.


4. If you have not uninstalled the old WinWebMail software in the correct way, uninstall and upgrade the software in the correct way.

5. After the new version is installed, the installer requires that you do not restart the machine when you restart it, resulting in such an error.

6. Improper configuration of firewall software may also cause this error. For more information, see "firewall settings.

7. This error may also occur when the easymail.exe or emsvr.exe file is infected.

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4. WebMail cannot delete emails, and all settings cannot be saved.
Set the correct folder permissions to solve this problem:
For example, WinWebMail is installed in the D: \ WinWebMail directory.
After setting the permission, restart IIS to make the setting take effect.
D: \ WinWebMail (and all its subdirectories) Users or Everyone full control
D: \ root directory
Users read

5. How to Deal with Spam
For the mail server, there are two types of spam:
1. Outbound Spam Sent by the email server.
2. send spam to the mailbox in the system.


I. Sending out spam:
1. Sending spam is caused by the use of a large number of spam mails sent by spammers on your email server. These outgoing spam messages greatly occupy system resources, including CPU resources, memory resources, and bandwidth resources ). The number of emails to be sent is as large as several thousand, tens of thousands, or even hundreds of thousands under the \ WinWebMail \ mail directory. mhd ,. in ,. tmp file ). Note: If the DNS server set in WinWebMail stops working or cannot be connected, a large number of emails will be sent.

2. first, you need to clear all emails to be sent by clicking the icon in the lower right corner of the server, and then selecting the "tool" item in the pop-up menu, select "Clear all emails to be sent" in the sub-menu. after entering the function interface, you can view the number of emails to be sent. Note: if there are many emails to be sent, this time may take a long time), and then you can click the "Start" button to clear all emails to be sent.

3. Prevent outgoing spam:
Click the icon in the lower-right corner of the server, and select "enable SMTP mail authentication" in "system settings"> "sending and receiving rules" in the pop-up menu, this may be the most effective way to prevent outgoing spam.
Click the icon in the lower-right corner of the server, and select "only allow users in the system to send emails" in "system settings"> "sending and receiving rules" in the pop-up menu.
Use the out-of-box mail automatic restriction function for the user account. Click the icon in the lower-right corner of the server, and select enable auto-Filtering for outdoor mail on the "system settings"> "protection" page in the pop-up menu.
After the user client is infected with the virus, the virus will use the settings in Outlook Express to send a virus email to the mail server. In response to this situation, you need to install WinWebMail Enterprise Edition, enable and correctly set anti-virus options.
The system may block external emails when too many emails are returned, and the anti-spam organization may mistakenly identify the bounce as the IP address after the spam, we recommend that you disable the "allow email return to external addresses that do not exist in the system" and "notify the sender of virus emails" function.

Ii. Sending SPAM:
1. Sending spam in the mail system is caused by spammers posting spam through your email server. Some mailboxes in the system receive a large number of spam messages.

2. prevent spam sending:
Enable SMTP domain name verification. This function has good anti-spam effect. We recommend that you enable this function. Click the icon in the lower-right corner of the server, and select enable SMTP domain name verification on the "system settings"> "protection" page in the pop-up menu.
Click the icon in the lower-right corner of the server, and select "enable SMTP sending and receiving authentication" and "enable receive authentication" in "system settings"> "sending and receiving rules" in the pop-up menu.
Click the icon in the lower-right corner of the server, and select enable anti-spam function in the "system settings"> "protection" page in the pop-up menu.
Click the icon in the lower-right corner of the server, and select Enable email exceeding limit Filtering for the same content on the "system settings"> "protection" page in the pop-up menu.
Click the icon in the lower right corner of the server, then, enable the mail content filtering and keyword filtering functions on the "system settings"> "protection" page in the pop-up menu and set them properly. If necessary, you can also enable and set the "reject connections and emails from the specified IP address or server" function to prevent spam.
You can enable anti-spam policies based on your actual situation, including anti-spam settings, email filtering, email rejection, and trust list. The administrator needs to enable the "non-spam sender confirmation function" by clicking the icon in the lower right corner of the server, enable this function in "advanced"> "security" in the pop-up menu.

3. effective methods to prevent outgoing and outgoing Spam Emails:
1. because spammers usually copy or secretly send a spam email to many addresses, You need to limit the maximum number of recipients when sending mail via SMTP protocol. The method is as follows: click the icon in the lower-right corner of the server, and set "Maximum number of recipients" in "system settings"> "sending and receiving rules" in the pop-up menu. Generally, we recommend that you do not exceed 10.

2. Enable connection attack protection. Because spammers need to constantly connect to the mail server to deliver spam, you can enable this function to prevent part of spam. Click the icon in the lower-right corner of the server, and select enable connection attack protection on the "system settings"> "protection" page in the pop-up menu, then, set "Enable automatic protection.

4. For details about other methods, see "how to prevent spam.

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6. Does WinWebMail support the same user name in multiple domain names? Why does it fail to create a mailbox with the same user name in different domains?
WinWebMail supports multiple domain names with the same user name.

You need to know more about how to use multiple domain names and multiple users, which can help install easymail in the software installation directory. "How to implement the same account in different domain names" in chm.

In addition, if you want to apply for an account with a domain name through WebMail, if you are using 3.5.2.1 or a later version, you can log on to the WebMail interface as an administrator, then, in "system settings"> "resource usage settings", select "public applications include domain name accounts.

7. How to solve the problem that fails to be sent to sina.com and tom.com?
1. Install the latest WinWebMail 3.6.2.1 or later.
2. You need to resolve the domain name MX record or A record to the mail server address.
3. Set Helo information correctly.

If you have correctly resolved the domain name MX record or A record to the mail server address, and set the Helo item correctly, and sent an email to sina.com or returned:
553 Spam Mail http://mail.sina.com.cn/FAQ.html
This is because, within a period of time, if the number of emails sent from the same IP address to sina.com exceeds the limit, the IP address will be blocked by the free email system, emails cannot be sent to sina.com within the blocked time. Generally, after 15-20 minutes, if the IP address does not send emails to it, the IP address will be automatically deleted from the IP address list.

If your IP address has not been unlocked within the specified time, please contact antispam@staff.sina.com.cn, lanjiang@staff.sina.com.cn
Or call: 010-82628888 to 5346
You can send a mail to sina.com only after sina.com adds the IP address or domain name of your server to the system whitelist.

8. solved the problem of uploading attachments larger than 2003 K and downloading attachments larger than 4 m in IIS 6.0 of Windows.
In IIS 6.0, the default settings are especially strict and secure, and a maximum of 204,800 bytes can be transferred. This can minimize attacks caused by too many loose timeouts and restrictions. This restriction is not available in versions earlier than IIS 6.0)

Solution:
1. Disable the iis admin service in the service.
2. Find the metabase. xml file under windows \ system32 \ inetsrv.
3. Open it in plain text mode. Find ASPMaxRequestEntityAllowed and change it to a value of 10 m (10240000). The default value is 204800, that is, 200 K.
4. Save the disk and restart the iis admin service.


To download attachments that exceed 4 MB in IIS 6.0, follow these steps:
1. Disable the iis admin service in the service.
2. Find the metabase. xml file under windows \ system32 \ inetsrv.
3. Open it in plain text mode. Find AspBufferingLimit and change it to 20 m (20480000 ).
4. Save the disk and restart the iis admin service.

9. attachments that exceed 4 MB cannot be uploaded through WebMail.
1. Because the IIS script time-out time on your server is not long enough, you need to add the script time-out time in IIS. the operation method is "site or virtual directory" in IIS) click the "Configure" button under "main directory" to set the script timeout time to 300 seconds. Note: it is not the Session Timeout time ).

2. It may be because the setting in the mail system limits the size of attachments Uploaded By WebMail. You can set the permission to upload larger attachments by logging on to WebMail as an administrator, search for and set "total length of attachments allowed to be sent under Web" in "system settings" to a larger value, for example, 10000 K

If your operating system is Windows 2003, you cannot upload more than 200 K attachments. solution:
Solution: refer to the detailed description on this page.

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10. "timeout" occurs during Web login. Please try again"
I. Improper firewall software configuration: this problem occurs when local UDP communication is disabled or WinWebMail and Microsoft's component pool are not allowed to communicate.

2. If "multi-protocol" in "SQL Server network utility" is not enabled during SQL Server installation, the following error may occur:


Iii. problems caused by improper settings in IIS 2003 of Windows 6.0:
When you create multiple WinWebMail mail virtual directories or sites in IIS 6.0 at the same time, you must use the same application pool. Otherwise, such problems may occur.

It is recommended that WebMail use a new application pool to set its attribute to not recycle). Otherwise, if an application pool is mixed with a website, the system will automatically recycle the website once a problem occurs, in this way, "timeout, please try again" will occur in WebMail.

Remove the check boxes before the "recycle worker" option and "Disable worker after idle for this period of time" options in the "properties" of the application pool used by WebMail, restart IIS. (See)


4. When multiple WinWebMail virtual directories or sites are created simultaneously in IIS 5.0, set "application protection" of all WinWebMail mail virtual directories or sites to "low IIS processes" as shown in the following figure, and then restart IIS to solve the problem.

11. How to Set HELO
Click the icon in the lower-right corner of the server, select "system settings" in the pop-up menu, select "sending and receiving rules", and set HELO items.

Setting method:
1. When you make an MX record for your domain name (for example, domain.com) (for example, the MX record is mail.domain.com), you can set HELO to this MX record (for example, mail.domain.com ).

2. If your domain name (for example, domain.com) is not MX recorded, you can set HELO to your domain name (for example, domain.com ).

Note: If you have multiple formal domain names, you only need to set one in HELO.

12. Solution to failure to send emails to hotmail.com in the near future
1. You must set the HELO information in the email system correctly. (Detailed setting method)

2. After logging on to the WebMail interface of your mailbox, go to "Options | mailbox configuration:
I. you must enter the "Email sender" item, and cannot enter it as the Email address format. There must be more than one space and the length must be enough, otherwise, hotmail.com will filter out the email. For example, if you enter "123" or "1 2 3", it will be filtered. If you enter "11 22 33", you can pass the filter.
II. The "Reply address" item must be set to null.

3. Make sure that your server IP address is not listed in the blacklist of anti-spam organizations.
You can submit your email server IP address in the http://rbls.org/, and the red background in the query results is to add your IP address to the blacklist of the site, you can go to the site to apply for removal. Or open it directly:
Http://www.robtex.com/rbl/1.1.1.1.html
Replace 1.1.1.1 with the IP address of your email server.

4. You cannot have a website address in your email, such as domain.com.

5. The theme must contain Re: content.

If the problem persists, submit the problem to hotmail at the following address:
Http://support.msn.com/eform.aspx? ProductKey = edfsmsbl & page = support_home_options_form_byemail & ct = eformts

13. How to Solve the Problem of defer-02 in yahoo.com?
Refer to anti-spam settings and how to prevent spam, you must enable the SMTP sending identity authentication function in WinWebMail.

Then, submit the relevant information on the following Yahoo representations page:
Http://add.yahoo.com/fast/help/us/mail/cgi_retest

Method:
1. What is your name?
Enter your name.

2. What is your email address?
Enter your Email.

3. IPs in the form provided before 255.255 (separate multiple IP submissions by new lines ):
Enter the IP address of your email server to be retested, for example, 211.23.188.5 (if there are multiple IP addresses, one IP address occupies one line ).

4. Indicate the error message (s) you have received ed.
Enter the content of the error message you received, such:
553 Mail from 211.23.188.5 not allowed-VS99-IP1 deferred-see help.yahoo.com/help/us/mail/defer/defer-02.html

5. Optionally, add a comment to your submission.
Enter the description to be supplemented.

6. Send the form to us:
Click send.

14. After WinWebMail is installed, WebMail returns an HTTP 500 error (or ASP: 0177 800401f3 error ).
The most common cause is that the WinWebMail installer fails to register the easymail. dll component. You can run the following command:
Regsvr32 C: \ WinNT \ System32 \ easymail. dll
After the component is manually registered, restart the server.

If you still cannot solve the problem after using the above command to register the component and restart the server, it may be because the iusr _ computer name (Internet Guest Account) accessing the website does not have the permission to read easymail. dll.

A simple method is to stop the IIS service program, move the C: \ WinNT \ System32 \ easymail. dll file to the installation directory of WinWebMail, and then run the following command:
Regsvr32 C: \ WinWebMail \ easymail. dll
Restart IIS.

If the problem persists, follow these steps to ensure that the related permissions are correct. Refer to the following files:
IIS 5-how do I set the required user and NTFS permissions for IIS5 (http://support.microsoft.com /? Id = 271071)
IIS 6-IIS6.0 Default User and NTFS permissions (http://support.microsoft.com /? Id = 812614)

If you follow the above steps strictly, you will not see this error again unless you forget some configuration in the above steps. You can temporarily add iusr _ computer name (Internet Guest Account) to the local administrator group. Note: This is only for troubleshooting. After the problem is resolved, you cannot add an Internet Guest account to the Administrator group!

If the problem is resolved after you join the Administrator group and restart IIS (or server. It is certain that this is caused by permissions. Follow the steps above to check the permission settings again. If the problem persists, delete the Internet Guest account from the Administrator group and consult other professional and technical personnel.

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