QUOTED_MESSAGE: > list wrote: [SNIP] > > This is really a Postfix and Spamassassin question > rather than one for the Anomy users list. > > However... SpamAssassin is heavy on resources, period. > Using spamc / spamd helps, but if your server is low on > memory or processor speed it won't make a huge > difference. > > You can limit how many SMTP messages Postfix will > receive simultaneously >   by editing master.cf and changing the > maxproc column for the the smtpd line. For > example: > > smtp inet n - n - 10 > smtpd > > (the above would change the max SMTP connections from > 100 to 10). > > That's not a great solution, though... it'll limit your > outbound mail too. If you have another server on your LAN > that's less busy, perhaps you could install spamassassin on > that and configure spamc to send the spam checking to it > (ie. with "spamc -d"). > [SNIP] > Impossible to say without seeing the Postfix logs (and > no, please don't post them here! ;-) That the messages are > mostly bounces is a good sign a spammer used your domain as > a fake return address. Usually a DoS attack against a mail > server appears as a bunch of connections that timeout with > no mail actually being sent, or a gazillion garbage > messages to <postmaster>.

  EKKI skrifa neitt hér: