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So, right now we have a Postfix + Dovecot + Amavis server for our mail.

We do "group lists" as a gaint Alias.

The complaint has come up, that when someone sends an email to, that they then recieve a copy of the email themselves.

The only MLM i'm familiar with is EzMLM which i'm not aware of the above functionality, as well as I kinda dread getting it to work properly with postfix.

anyone have any suggestions on software that does the above?

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closed as off-topic by masegaloeh, HBruijn, HopelessN00b Feb 1 '15 at 0:17

This question appears to be off-topic. The users who voted to close gave this specific reason:

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Isn't user education a possible solution? If anything, I'd think that seeing a copy of the message that looks the same as everyone else in the company got would be a good thing. – Ward Jan 25 '12 at 3:41

GNU Mailman has the "not metoo" and "no dupes" user config options, which do exactly what you're looking for.

Additionally, Mailman is very easy to get working with postfix.

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