On Saturday 12 December 2009 17:59:49 Wietse Venema wrote: > =?utf-8?q?K=C4=81rlis_Repsons?=: > > After seeing these: > > > > postfix/smtpd[14497]: warning: 118.71.107.14: hostname > > adsl-dynamic-pool-x -xx.fpt.vn verification failed: Name or service not > > known > > postfix/smtpd[14497]: connect from unknown[118.71.107.14] > > postfix/smtpd[14497]: NOQUEUE: reject: RCPT from unknown[118.71.107.14]: > > 5 -50 5.1.1 <d...@dd.lv>: Recipient address rejected: User unknown in > > virtual mai -lbox table; from=<d...@dd.lv> > > to=<d...@dd.lv> proto=SMTP helo=<adsl-dynamic-pool-xxx.fpt.vn> > > > > in my logfiles, I got curious: what would happen, if anyone keeps on > > spamm -ing at full speed to nonexistent address all day long? Would > > logfiles get fl -ooded or some quota would get exhausted? > > The client would have to do repeat this about two million times to > fill one gigabyte of logfile space. This is not impossible but it > would take some effort. > > See http://www.postfix.org/TUNING_README.html#conn_limit to set > limits on the number of requests a client may make. > > You can run a logfile watching program that adds a firewall rule > or takes some other action when a client is mis-behaving. It would > be a bad idea to stop Postfix or to stop logging. > > Wietse
Thanks...
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