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Pablo Santa Cruz
Asked: 2009-05-15 13:05:20 +0800 CST

Filter domains by user with SENDMAIL

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I administer one mail server that hosts several domains in it. I.E.

  • Mail Server: supermailserver.mydomain.com

Hosting mail for domains:

  • domain1.com
  • domain2.com
  • domain3.com
  • domain4.com
  • domain5.com

I have my user database with OpenLDAP. The server works just fine. There is only one thing I would like to tweak which is the following:

Right now, if I add a user "username" to OpenLDAP and the CyrusMail backend, then "username" gets mail through the following addresses:

The tweak I would like to make is to allow "username" to get emails only from selected domains. What's the best (and easiest) way to do this?

Thanks a lot in advance.

sendmail domain

2 Answers

  1. We setup explicit entries in virtusertable for domains that we accept mail for:

    @domain1.com         error: 5.1.1:550 User %[email protected] unknown
[email protected]    %1+%2
[email protected]    %1+%2

@domain2.com         error: 5.1.1:550 User %[email protected] unknown
[email protected]    %1+%2
[email protected]    %1+%2

    This forces you to list out every mail address that you accept (which can be interpreted as either bad or good)

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  2. I believe that you could use the M4 macro FEATURE(virtusertable',dbtype') where dbtype can be ldap or dbm as an example to use a database instead of a file.

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