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,

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

sender domain,
sender email address,
recipient domain,
recipient email address
sender email address if email addressed to a specific recipient email address

How to use it?

In your .mc file, first include FEATURE(access_db)
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

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:sender@senderdomain.com<@>recipient@recipientdomain.com		qg1
QFTO:<><@>recipient1@recipientdomain1.com		qg2
QFRM:sender1@senderdomain1.com		qg3
QFRM:senderdomain2.com		qg4
QFRM:<>		qg5
QGRP:recipient2@recipientdomain2.com		qg6
QGRP:recipientdomain3.com		qg
	..........

Compile and test
sendmail -d21.4 -bt -Cyournewconfig.cf

Call debugging ruleset queuegroupd for debugging purposes. See an example session below:

joe@mydomain.com [~] $ sendmail -d21.4 -bt -Csendmail-new.cf
ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)
Enter <ruleset> <address>
> queuegroupd sender@senderdomain.com $| rec@recipientdomain.com
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
joe@mydomain.com [~] $

Licence

GNU General Public License.

Disclaimer

No warranty. Use at your own risk.