On Wed, 2009-07-08 at 19:10 +0200, Ignacio Garcia wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi guys. I've been googling around looking for info on this without much > sucess. Here we are: Some of my customers insist on sending bulk-email > from their web php sites (you know, bulletins and such). My worst > nightmare would be having our servers listed in any RBL list because of > this. How do you guys deal with custommers sending bulk-mail? Are there > any rules in postfix to prevent it, maybe even delaying them in the queue? > > Thanks, > This may be OT here
Outgoing spam scanning is a very good option. Unlike incoming , here you dont have to catch all the spam. Just one spam caught , and you know who is the culprit. What I do is to reduce the scanning I only scan messages sent to russia,china, taiwan etc. (based on domain tlds). Since legitimate traffic from my servers to these are much smaller they usually catch a lot of spam, with very little penalty of scanning. This works for me because most outbreaks are due to weak passwords or some virus. Ofcourse YMMV One more thing you must do is monitor abuse complaints, Create Feedback loops with aol, yahoo etc. (Unfortunately gmail doesnt seem to have one) Anyway you really dont have to worry too much. No one blacklists you because of just one or two spams inadvertently relayed thru your network. You just have to bother about customers who deliberately spam, we have had very bad experiences and since then we have been insisting on getting a bullet-proof TOS signed. > Ignacio > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iEYEARECAAYFAkpU0vsACgkQoYMx3fsuWupQ4ACcD4VK6anNBYOYX5DWl0KuceWA > Px0An1YNSykuBHExZqroKI+kPyfHucV4 > =OI9W > -----END PGP SIGNATURE-----
