Sendmail Extended Queue Groups

This is an extension to existing queuegroup feature in Sendmail 8.12 versions. This new feature, called queuegroupx, provides extended queuegroups in Sendmail 8.12.

Download queuegroupx.m4

• First extract sendmail-8.12.x.tar.gz.
• Then sendmail-8.12.x directory is created.
• Then save queuegroupx.m4 inside sendmail-8.12.x/cf/feature
• Create sendmail-8.12.x/cf/cf/sendmail.mc to suit your environment
• Use queuegroupx in place of queuegroup inside your sendmail.mc file
• Compile sendmail as usual by typing: cd sendmail-8.12.x && sh Build
• Generate sendmail.cf as usual by typing: cd cf/cf && sh Build sendmail.cf
• Create new user smmsp in a new group smmsp.
• Backup your existing Sendmail and /etc/mail
• Install sendmail and sendmail.cf as usual by typing:
  cd sendmail-8.12.x/cf/cf && sh Build install-cf ; cd ../.. ;
  sh Build install
• Create all the necessary entries in /var/spool/mqueue, create queue groups in /etc/mail/access file, and edit any other files in /etc/mail/ to suit your needs.
• Secure all file permissions and generate maps using makemap and launch sendmail. See below for help in securing permissions and generating maps.

For securing permissions and generating database maps, you can download into /etc/mail and use my build script.

No need to make any changes to site.config.m4 inside sendmail-8.12.x/devtools/Site

For illustration purposes,

• See my site.config.m4
• See my sendmail.mc

About queuegroupx feature

I added additional rules to queuegroup feature and its called queuegroupx
(extended queuegroups feature).

What is it ?

A feature that allows you to specify different queuegroups for different emails
when sendmail queues emails for delivering. You can choose what queuegroup to use
depending on

1. sender domain,
2. sender email address,
3. recipient domain,
4. recipient email address
5. sender email address if email addressed to a specific recipient email address

How to use it?

1. In your .mc file, first include FEATURE(access_db)
2. Then include queuegroupx as follows
   

   FEATURE(queuegroupx)

   OR

   FEATURE(queuegroupx,`defaultqg')

   where defaultqg queuegroup will be used if no matching queuegroup found in access file
   

3. Create entries in access file (Notice null sender specified as <>)

   IMPORTANT: recipient domain should NOT be in local-host-names. Otherwise,
   it will be just ignored. If you want to have a queuegroup for $=w names , i.e.,
   local host names, use mailer definition for local mailer instead of creating queuegroup in access file
   

   QFTO:[email protected]<@>[email protected]		qg1
   QFTO:<><@>[email protected]		qg2
   QFRM:[email protected]		qg3
   QFRM:senderdomain2.com		qg4
   QFRM:<>		qg5
   QGRP:[email protected]		qg6
   QGRP:recipientdomain3.com		qg
   	..........

4. Compile and test
   sendmail -d21.4 -bt -Cyournewconfig.cf
   
   Call debugging ruleset queuegroupd for debugging purposes. See an example session below:
   
   [email protected] [~] $ sendmail -d21.4 -bt -Csendmail-new.cf
   ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)
   Enter <ruleset> <address>
   > queuegroupd [email protected] $| [email protected]
   queuegroupd input: sender @ senderdomain . com $| rec @ recipientdomain . com
   rewritten as: sender @ senderdomain . com $| rec @ recipientdomain . com
   queuegroup1 input: sender @ senderdomain . com $| rec @ recipientdomain . com
   rewritten as: sender @ senderdomain . com $| rec @ recipientdomain . com
   queuegroup2 input: sender @ senderdomain . com $| rec @ recipientdomain . com
   SearchList input: < ! qfrm > $| < F : sender @ senderdomain . com > < D : senderdomain . com > < >
   F input: < sender @ senderdomain . com > < ? > < ! qfrm > < >
   rewritten as: < ? > < sender @ senderdomain . com > < ? > < ! qfrm > < >
   rewritten as: < ? > < >
   F returns: < ? > < >
   rewritten as: < ! qfrm > $| < D : senderdomain . com > < > $| < ? > < >
   SearchList input: < ! qfrm > $| < D : senderdomain . com > < >
   D input: < senderdomain . com > < ? > < ! qfrm > < >
   rewritten as: < ? > < senderdomain . com > < ? > < ! qfrm > < >
   rewritten as: < ? > < senderdomain . com > < ? > < ! qfrm > < >
   D input: < com > < ? > < ! qfrm > < >
   rewritten as: < ? > < com > < ? > < ! qfrm > < >
   rewritten as: < ? > < >
   D returns: < ? > < >
   rewritten as: < ? > < >
   D returns: < ? > < >
   rewritten as: < ! qfrm > $| < > $| < ? > < >
   rewritten as: < ? >
   SearchList returns: < ? >
   rewritten as: < ? >
   SearchList returns: < ? >
   rewritten as: rec @ recipientdomain . com $| < ? >
   queuegroup4 input: rec @ recipientdomain . com
   SearchList input: < ! qgrp > $| < F : rec @ recipientdomain . com > < D : recipientdomain . com > < >
   F input: < rec @ recipientdomain . com > < ? > < ! qgrp > < >
   rewritten as: < ? > < rec @ recipientdomain . com > < ? > < ! qgrp > < >
   rewritten as: < ? > < >
   F returns: < ? > < >
   rewritten as: < ! qgrp > $| < D : recipientdomain . com > < > $| < ? > < >
   SearchList input: < ! qgrp > $| < D : recipientdomain . com > < >
   D input: < recipientdomain . com > < ? > < ! qgrp > < >
   rewritten as: < ? > < recipientdomain . com > < ? > < ! qgrp > < >
   rewritten as: < ? > < recipientdomain . com > < ? > < ! qgrp > < >
   D input: < com > < ? > < ! qgrp > < >
   rewritten as: < ? > < com > < ? > < ! qgrp > < >
   rewritten as: < ? > < >
   D returns: < ? > < >
   rewritten as: < ? > < >
   D returns: < ? > < >
   rewritten as: < ! qgrp > $| < > $| < ? > < >
   rewritten as: < ? >
   SearchList returns: < ? >
   rewritten as: < ? >
   SearchList returns: < ? >
   rewritten as: < ? >
   rewritten as: $# default
   queuegroup4 returns: $# default
   rewritten as: $# default
   queuegroup2 returns: $# default
   rewritten as: $# default
   queuegroup1 returns: $# default
   rewritten as: $# default
   queuegroupd returns: $# default
   > ^D
   [email protected] [~] $

Licence

GNU General Public License.

Disclaimer

No warranty. Use at your own risk.

© Murty Rompalli
All Rights Reserved.