Your domain seems to be on URIBL blacklist (black) "Contains an URL listed in the URIBL blacklist [URIs: d u s t y p e x.com]"
jfyi Razvan -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema Sent: Tuesday, June 03, 2014 10:46 PM To: Postfix users Subject: Re: Error I'm not familiar with Paul C: > Jun 3 14:22:41 PHX1-1831 postfix/smtpd[2092]: warning: hostname > cleers.dustypex.com does not resolve to address xx.xx.xx.xx: Temporary > failure in name resolution Jun 3 14:22:41 PHX1-1831 > postfix/smtpd[2092]: connect from unknown[xx.xx.xx.xx] The client IP address has no PTR record, or the PTR record name does not resolve to the client IP address. Postfix therefore logs the client as "unknown" instead of cleers.dustypex.com. > Jun 3 14:22:41 PHX1-1831 postfix/smtpd[2092]: improper command > pipelining after EHLO from unknown[xx.xx.xx.xx]: HELO > hostname.domain.net.net\r\n The client sends EHLO some-host-name<CR><LF>HELO hostname.domain.net.net<CR><LF> This violates SMTP, and Postfix logs this. You can block mail from such clients by using reject_unauth_pipelining in smtpd_*_restrictions. > First is probably someone trying to relay to my server, the > cleers.dustypex.com hostname is not one of mine, but the ip I X'd out > is mine, so my guess is they try to connect on that ip and send mail, > and postfix is stopping it? I've gotten maybe 1000 of them in the last > 2-3 days. You have a bot on your network, and you need to clean up that machine. Unless Postfix is configured to block this, it will forward their mail. Wietse
