Hi!
Some mailservers close their session immediatley if the client-IP is listed on RBLs or expected to come from a dynamic IP-range: p...@waffel:~> telnet 71.74.56.244 25 Trying 71.74.56.244... Connected to 71.74.56.244. Escape character is '^]'. 554 5.7.1 - ERROR: Mail refused - <89.204.137.69> - See http://csi.cloudmark.com/reset-request/ Connection closed by foreign host. p...@waffel:~> In that case Postfix keeps his messages in the deferred-Queue even if the recipients server has sent a 5xx fatal error: Feb 17 00:55:28 91.198.250.29 postfix/smtp[9073]: 22210F6525: to=<xx...@triad.rr.com>, relay=hrndvasmtpin02.mail.rr.com[71.74.56.244], delay=1, status=deferred (host hrndva-smtpin02.mail.rr.com[71.74.56.244] refused to talk to me: 554 5.7.1 - ERROR: Mail refused - <213.203.238.10> - See http://security.rr.com/cgi-bin/block-lookup? 213.203.238.10) I don't understand why Postfix does not bounce the message?! It's a fatal error! Peer -- Heinlein Professional Linux Support GmbH Linux: Akademie - Support - Hosting http://www.heinlein-support.de Tel: 030 / 40 50 51 - 0 Fax: 030 / 40 50 51 - 19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin
