SendMail ConfigurationYum-y Update SendMail SENDMAIL-CFSendMail Related Categories1. Configuration file directory:/etc/mail2. Record:/var/log/maillog3. Temporary directory of received correspondence:/var/spool/mail/4. Temporary catalogue of Outgoing letters:/var/spool/mqueue/Backup first, then modifyCd/etc/mailMV SENDMAIL.CF Sendmail.cf.bakRemove settings that only the server itself can deliver the letterVi/etc/mail/sendmail.mcDaemon_options (' port=smtp,addr=127.0.0.1, Name=mta ') changed toDNL
SendMail Configuration
Yum-y Update SendMail SENDMAIL-CF
SendMail Related Directory1. Profile directory:/etc/mail2. Record file:/var/log/maillog3. Provisional catalogue of received letters:/var/spool/mail/4. The temporary catalogue of the letters sent:/var/spool/mqueue/
Back up first, then modify
Cd/etc/mailMV SENDMAIL.CF Sendmail.cf.bak
Remove the setting that only the server itself can deliver the letter
Vi/etc/mail/sendmail.mc
Daemon_options (' port=smtp,addr=127.0.0.1, Name=mta ') cha
want to add other RBL authentication, then add a few more sentences to this, generally add two RBL certification is enough too):
①feature (' DNSBL ', ' relays.ordb.org ', ' ″email blocked using Ordb.org-see″ ')
②feature (' DNSBL ', ' cblplus.anti-spam.org.cn ', ', ', ' ″451 temporary lookup failurefor″${client_addr}″in Cbl.anti-spam.org.cn″ ')
The final implementation of the M4 SENDMAIL.MC>SENDMAIL.CF a
free.
Add RBL authentication to Sendmail. mc adds the following sentence. The first sentence indicates that ORDB is added. the RBL service of ORG. The second sentence indicates that the RBL service of ANTI-SPAM is added. Note that the second one must be registered with the website before it can be used. If you want to add other RBL certifications, you can add a few more words in this case. Generally, it is enough to add two RBL certifications ):
① FEATURE '
services, but it must be registered before it can be used for free.
Add RBL authentication to Sendmail. MC adds the following statements (the first statement indicates that ordb is added. the RBL service of org. The second sentence indicates that the RBL service of anti-spam is added. Note that the second one must be registered with the website before it can be used. If you want to add other RBL certifications, you can add a few more words in this case. Generally, it is enough to add two RBL c
will be found to start downloading first. Otherwise, only some starting file blocks will be downloaded. If this is set to 0, BT will be replaced. always_prio_rare disabled, and 1000 indicates that the set attribute is Enabled: 0 ~??* Peer. lazy_bitfield: bypasses some ISP interference, but the attribute is not necessarily valid: True/false* Peer. resolve_country: Use dnsbl {DNS-based blackhole list (dnsbl,
addresses of the specially sent spam mails to their blacklists. As long as RBL authentication is added to Sendmail, the email server will automatically go to The RBL server to check the IP addresses of all emails, if the mail comes from the blacklist, Sendmail rejects the mail, so that the users in the Organization are less suffering from spam.
To add RBL authentication to Sendmail, add the following content to Sendmail. mc:
FEATURE ('dnsbl, 'relays
take effect:
Makemap hash access. db
(2) add the RBL function to Sendmail.
RBL (Realtime Blackhole List) is a real-time blacklist. Common RBL server addresses include relays.ordb.org, bl.spamcop.net, dun.dnsrbl.net, and dnsbl.sorbs.net. Querying and removing IP addresses in RBL can go to http://openrbl.org and http://ordb.org.
RBL adds the IP addresses of the specially sent spam mails to their blacklists. as long as RBL authentication is added to Sendmail, the email server will automatically g
Dnsbl.sorbs.net. Query and delete the IP address in the RBL to http://openrbl.org/and http://ordb.org. RBL will collect the Chinese spam IP address into their blacklist, as long as in SendMail to add RBL authentication function, will make the mail server in each receipt automatically to RBL server to verify, if the letter from the blacklist, then SendMail will reject mail, So that the unit's users less suffering from spam. To add RBL authentication to the SendMail, you need to add the following
, dnsbl.njabl.org, bl.spamcop.net, sbl.spamhaus.org, dun.dnsrbl.net, and dnsbl.sorbs.net. To query and delete IP addresses in RBL, go to http://openrbl.org/and http://ordb.org. RBL adds the IP addresses of the specially sent spam mails to their blacklists. As long as RBL authentication is added to Sendmail, the email server will automatically go to The RBL server to check the IP addresses of all emails, if the mail comes from the blacklist, Sendmail rejects the mail, so that the users in the Org
Original e-Mail used content-type:text/htmlThe following is the X-spam score, when the score more than 6 points are treated as junk mailX-spam-status:yes, score=6.3 required=6.0 tests=content_type_present,Directunknown, Html_message,mime_html_only,only1hopdirect,rdns_none,TO_NO_BRKTS_FROM_MSSP, To_no_brkts_nordns_html,uribl_blocked,utf8 autolearn=No version=3.3.1X-spam-report: *0.0uribl_blocked ADMINISTRATOR notice:the query to URIBL was BLOCKED. * See Http://wiki.apache.org/spamassassin/DnsB
/apache2/mods-available/antiloris.conf
# Maximum number of parallel connections for each IP address in the READ status
IPReadLimit 5
Prevent DNS injection attacks
The Spamhaus module uses the domain name system blacklist (DNSBL) to prevent spam forwarding through Web forms, prevent URL injection attacks, and prevent http DDoS attacks from bot programs, it usually protects the server from known malicious IP addresses.
$ sudo apt-get -y install libapa
name key is an email identity authentication system used to verify the DNS domain and email integrity of the email sender. The domain name key specification adopts Internet email authentication technology and establishes an enhanced protocol: The domain name key recognition email is DKIM ).Question 20: What are the ASSP rules in the mail system?
A: ASSP (Anti-Spam SMTP Proxy, Anti-Spam Proxy) is a gateway server installed in front of your MTA, through self-built whitelist, automatic Learning Ba
to make the modification take effect: makemap hash access. db
(2) Add the RBL function to Sendmail.
RBL (Realtime Blackhole List) is a real-time blacklist. Some foreign organizations provide RBL services. Common RBL server addresses include relays.ordb.org, dnsbl.njabl.org, bl.spamcop.net, sbl.spamhaus.org, dun.dnsrbl.net, and dnsbl.sorbs.net. To query and delete IP addresses in RBL, go to http://openrbl.org/and http://ordb.org. RBL adds the IP addresses of the specially sent spam mail
650) this.width=650; "src=" http://imga.chrome001.com/article/201603/24/2145032eeekhcvevwinciu.png "border=" 0 " Class= "Shadow" alt= "My IP Address" style= "border:0px;vertical-align:middle;margin-bottom:0px;"/>Plugin Introduction:Many times we need to use the IP address, this noun may be known to everyone, but do you know how to check your own IP address? Today we recommend a plugin to view IP addresses. My IP address, this application displays information about your IP address, such as geoloc
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