Changes

From SME Server
Jump to navigationJump to search

Email Whitelist-Blacklist Control (view source)

Revision as of 17:31, 10 November 2021

115 bytes removed ,  17:31, 10 November 2021
no edit summary
Line 77: Line 77:  
====Black Lists: REJECT====
 
====Black Lists: REJECT====
   −
The '''qpsmtpd badhelo''' is effective in examining the SMTP HELO string and then block mail based on this string. Entries follow the following format.
+
=====Plugin: Helo=====
−
something.a.somehost.com
+
 
−
To find the proper string to enter on the qpsmtp badhelo line. 1. Open an offending email. 2. Open the header of the email. 3. Look for a line that says,
+
  Format:
−
(HELO something.a.somehost.com)
+
  some.host.domain
−
Partial strings will not work, E.G. in the previous example somehost.com will not work. It must be the complete HELO string.
+
 
−
{{Note box|Using qpsmtpd badhelo will stop all mail at a domain that uses that specific HELO string. It's not looking at a specific email. This strategy isn't always effective as spammers generally change this field to stop this kind of detection. Also companies have several SMTP gateways so you may see mail from mail1.domain.com and mail2.domain.com . You will then need to add both of these. The advantage  however is if you do want to stop all mail from one source, it can be effective. }} Alternatively you may use the ip address. Again look in the header for the Helo line. It may look something like this,
+
Add domains, hostnames, or perl regexp patterns to the <badhelo> config file; one per line.
−
Received: from smtprelay0207.c.somehost.com (HELO smtprelay.c.somehost.com) '''(123.111.123.321''')
+
 
−
Now simply add the IP address you found in the HELO line.
+
{{Note Box|You cannot block HELO IP addresses with this plugin. It is not designed to do that}}
−
123.111.123.321
+
 
 +
https://github.com/smtpd/qpsmtpd/blob/master/plugins/helo
 +
 
 +
Matches in the <badhelo> config file, including yahoo.com and aol.com, which neither the real Yahoo or the real AOL use, but which spammers use a lot.
 +
Like qmail with the qregex patch, the <badhelo> file can also contain perl regular expressions. In addition to normal regexp processing, a pattern can start with a ! character, and get a negated (!~) match.
 +
 
 +
=====Plugin: Badmailfrom=====
 +
 
 +
Format:
 +
  @host or user@host
 +
 
 +
This plugin also supports regular expression matches. This allows special patterns to be denied (e.g. FQDN-VERP, percent hack, bangs, double ats).
 +
Patterns are stored in the format pattern'''(\s+)'''response, where pattern is a Perl pattern expression. Don't forget to anchor the pattern (front ^ and back $) if you want to restrict it from matching anywhere in the string.
 +
 
 +
https://github.com/smtpd/qpsmtpd/blob/master/plugins/badmailfrom
   −
Badmailfrom
  −
@host or user@host
      
====White Lists: ACCEPT====
 
====White Lists: ACCEPT====
 
   
 
   
−
Whitelisthosts - see this post http://forums.contribs.org/index.php/topic,51429.0.html
+
=====Whitelisthosts=====
 +
 
 +
see this post http://forums.contribs.org/index.php/topic,51429.0.html
    
Single IP
 
Single IP
Line 101: Line 115:  
  192.168
 
  192.168
   −
WhitelistHELO
+
=====WhitelistHELO=====
 
  host.domain.com
 
  host.domain.com
   −
Whitelistsenders
+
=====Whitelistsenders=====
 
  joe@foo.com
 
  joe@foo.com
 
  foo.com
 
  foo.com
Retrieved from "https://wiki.koozali.org/Special:MobileDiff/40609"

Navigation menu