Am 25.05.2012 19:37, schrieb Charles Marcus: > On 2012-05-25 1:22 PM, Georg Schönweger <[email protected]> wrote: >> As this domain has a catch all mail address every sender of my >> Postfix server should be valid now (can receive mails). > > Please do NOT use catch-all addresses, as that breaks recipient validation... > anyone who sends an email to one of > your users and typos their address will not know it... > > Catch-alls are *always* a very bad idea, except in very specific special use > cases...
and they are playing spammers in their hand i am seeing here around 50000 spam-mails to non-existent RCPT in valid domains - if there would be catch-all we would have two problems the second only in the worst case they pass the spam-firewall * 200 OK to the spammer which feels sucess and earn money * 1.5 Mio messages to store and backup each month
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