I read now the thread in the archive and tried to apply the proposed solution. I'm still getting the same amount of spam mails where sender=receiver. My settings look like this:
disable_vrfy_command = yes smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks, check_helo_access hash:/etc/postfix/helo_access, reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, reject_unknown_helo_hostname, permit smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_rbl_client zen.spamhaus.org, permit smtpd_sender_restrictions = permit_mynetworks, check_sender_access hash:/etc/postfix/sender_access, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_sender_login_mismatch, reject_unauthenticated_sender_login_mismatch, permit I added the "reject_unknown_recipient_domain" and "reject_rbl_client zen.spamhaus.org" lines to no avail. Any ideas what else I could try? Sturgis, Grant wrote: > On Sun, 2008-12-07 at 09:51 -0700, Roland Plüss wrote: > >> I've got since a couple of weeks a rather nasty spam increase ( in >> fact >> massive ). Some jerk sends forged emails to some address [EMAIL PROTECTED] >> on my >> server with the same email address as the receiver ( hence [EMAIL PROTECTED] >> receives an email from [EMAIL PROTECTED] ). It's clearly not relayed by my >> server >> since the emails come from some spurious servers but got the sender >> email forged. >> >> Now I could not figure out a way with postfix-2.5.5 to reject emails >> where the sender and receiver emails do match. Any ideas how to >> accomplish this? >> > > This has been discussed at length in the last couple of weeks. Check > the archives: > > http://archives.neohapsis.com/archives/postfix/ > > > >> -- >> Yours sincerely >> Plüss Roland >> >> >> >> >> > > This electronic message transmission is a PRIVATE communication which > contains information which may be confidential or privileged. The > information is intended to be for the use of the individual or entity > named above. If you are not the intended recipient, please be aware that > any disclosure, copying, distribution or use of the contents of this > information is prohibited. Please notify the sender of the delivery > error by replying to this message, or notify us by telephone > (877-633-2436, ext. 0), and then delete it from your system. > -- Yours sincerely Plüss Roland Leader and Head Programmer - Game: Epsylon ( http://epsylon.rptd.ch/ , http://www.moddb.com/games/4057/epsylon ) - Game Engine: Drag(en)gine ( http://dragengine.rptd.ch , http://www.moddb.com/engines/9/dragengine ) - Normal Map Generator: DENormGen ( http://epsylon.rptd.ch/denormgen.php )
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