* Victor Duchovni <victor.ducho...@morganstanley.com>: > Do you have a tcpdump capture? From the above it sounds like HELO is > sent before the 220 banner. That's a protocol error.
No tcpdump, but I have this: Sep 30 15:23:53 mail postfix/postscreen[21955]: CONNECT from 192.109.31.12 Sep 30 15:23:53 mail postfix/postscreen[21955]: PREGREET 27 after 0.01 from 192.109.31.12: HELO mail.embl-hamburg.de?? Sep 30 15:23:53 mail postfix/postscreen[21955]: NOQUEUE: reject: RCPT from [192.109.31.12]: 550 5.5.1 Protocol error; from=<>, to=<valid.recipi...@charite.de>, proto=SMTP, helo=<mail.embl-hamburg.de> Sep 30 15:23:53 mail postfix/postscreen[21955]: NOQUEUE: reject: RCPT from [192.109.31.12]: 550 5.5.1 Protocol error; from=<postmas...@embl-hamburg.de>, to=<valid.recipi...@charite.de>, proto=SMTP, helo=<mail.embl-hamburg.de> Sep 30 15:23:53 mail postfix/postscreen[21955]: DISCONNECT 192.109.31.12 Sep 30 15:53:56 mail postfix/postscreen[10531]: CONNECT from 192.109.31.12 Sep 30 15:53:56 mail postfix/postscreen[10531]: WHITELISTED 192.109.31.12 Sep 30 15:53:56 mail postfix/postscreen[10531]: PASS OLD 192.109.31.12 Sep 30 15:53:56 mail postfix/smtpd[10563]: connect from mail.EMBL-Hamburg.DE[192.109.31.12] Sep 30 15:53:56 mail postfix/smtpd[10563]: NOQUEUE: client=mail.EMBL-Hamburg.DE[192.109.31.12] Sep 30 15:53:56 mail postfix/smtpd[10563]: disconnect from mail.EMBL-Hamburg.DE[192.109.31.12] which seems to back our both assumptions. -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebra...@charite.de | http://www.charite.de
