charles marcus qqugswomediabrokerscom 2192008 emanuil tolev weazttewwqktgmailcom wrote experiencing following problem bots connect mi port 25 send spam mi 2 domains relaying mail course disabled however bots fail instead try successfully send spams internal email addresses eg domains propertyxpresscom sgradacom bots try guess mailboxes like xvrrbapropertyxpresscom sales 123456 problem setup 2 catchall mailboxes 2 domains one problem catchalls one many reasons using strongly discouraged another big reason avoid cause people typo email address wrongly think mail successfully delivered bots identify internal users eg amwmuficurpropertyxpresscom accepted ok smtp server thus messages rejected get scanned amavisdclamdspamassassin setup eat servers limited 512mb ram fill roots mailbox virus alerts already 100mb would way limit outgoing smtp operations 127001 web scripts squirrelmail authorized smtpssl users add 127001 mynetworks reject others tried smtpd_client_restrictionspermit_mynetworks permit_sasl_authenticated disastrous results spammers also smtp servers able connect deliver incoming mail rejecting mail unauthorized destinations postconf n output always needed trying assess problem lies best regards charles thu 07 aug 2008 001224 0500 controlling outgoing smtp operations access