How to refuse to receive spam settings tips

We certainly received a lot of unsolicited email or spam on the web, sharing some tips on how to refuse to receive spam, as well as some useful experiences for users to see.

1, "Only allow users of this system to send letters" and "Enable SMTP identity Authentication function" is the most strongly recommended, otherwise, some post offices (such as: yahoo.com) will be rejected by your post office mail.

It is also recommended that you enable the Receive authentication feature, and that if you disable this feature, users in the system will not authenticate when they send messages to each other, which makes it possible to falsify the sender.

2, log on as an administrator webmail, and then enable the SMTP domain name verification feature in System settings | important settings. You can usually set the following figure:

In the "Do not check message processing" recommended that you can be set to "reject", so as to avoid putting the user's trash, users can not use the client software in time to deal with problems.

If a message from another post office (such as: vip.163.com) fails, and there is a your domain mismatches client ip[220.181.13.xxx in the letter of withdrawal (note: only "reject" mode will have this information), When confirming that this IP address is trustworthy, you can add this IP or IP segment (such as: 220.181.13.*) to the "Trust IP (unrestricted IP address or IP segment) feature". It is generally recommended that vip.163.com and yeah.net IP be added to this list:

220.181.13.*

220.181.31.*

Note: Do not enable this feature if you receive external mail from the firewall's 25 port to your mail server (all messages are from the IP address of the firewall). Otherwise, all external messages will be placed in the bin (or rejected) because they cannot be authenticated by the domain name.

3, enable the gray list anti-spam features, can effectively reduce the number of spam messages. However, this feature consumes more memory.

4, the user server to send the external mail, the recipient thinks is the spam and reports to the blacklist website, the user server IP address will be added to the blacklist by these websites. The post office that picks up and periodically downloads these blacklist data will then refuse to receive mail from the user's server. In order to solve the problem of blacklisted, it is necessary to strictly control the message sent outside the system.

5, we can click on the tool-mail rules, in the pop-up window divided into four parts, rule conditions, rules, rules, instructions, if we often receive spam messages containing this person 123456@ Qq.com spam, if we don't want to accept him from now on, we can select the sender in the Rule Condition column, and then enter the above address. Then select Remove from the server after the rule action.

In simple terms, you can enable mail filtering, go to "Mailbox Management-mail Filtering", add the e-mail address that you want to reject to the Reject list, or create a new filter to successfully reject spam by setting multiple filtering options to avoid the pain of interference.