Thanks Olivier! I'll take a look at that. This server is reserved only for bounces, notices, newsletters, and policy/competence updates so there's only a few system accounts on there. :)
-----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Olivier Nicole Sent: Thursday, July 30, 2009 8:00 PM To: ad...@ampprod.com Cc: postfix-users@postfix.org Subject: Re: filter incoming but not outgoing Hi, > 1. Sign outgoing messages with dkim and vbr (currently doing this with > amavis) > > 2. Only allow sending from our networks > > 3. Do NOT filter, virus scan or spam scam outgoing messages > > 4. DO scan and filter incoming messages > > 5. Optimize / Tweak settings for large number of outgoing messages Yesterday I was looking for the same thing and I found that page: http://www200.pair.com/mecham/spam/bypassing.html though it applies to Postfix+amavis, that is Postfix is in charge of deciding if a message is incoming or outgoing. Now I think it is a *very bad* idea to disable virus filtering on outgoing messages: I do filter all messages, and in case of outgoing message containing a virus, I sent a warning to the administrator: it means one of the machines in my network has a virus, I better know that and take action. Bests, Olivier
