Yes, I think this is a cisco asa 5550, with a special filter which protects "smtp server".
Do you think I should ask to disable it ? Thanks. Le 9 juil. 2010 à 15:46, Ralf Hildebrandt <ralf.hildebra...@charite.de> a écrit : > * Thomas POINDESSOUS <poindessous...@foncia.fr>: >> >> Hi, >> >> >> I have a problem between one of my postfix and a zimbra server (postfix >> server). >> >> >> sometime (one mail every three days), I got this error : >> 502 5.5.2 Error: command not recognized (in reply to RCPT TO command) >> >> >> I did a tcpdump to understand why I got this error and I found that one of >> the "RCPT TO:" command is cut in two packets. >> First packet finished by "RC" and second packet began by "PT TO:". And the >> server doesn't understand this command. > > Is there a firewall between the two? > > -- > Ralf Hildebrandt > Gesch��ftsbereich IT | Abteilung Netzwerk > Charit�� - Universit��tsmedizin 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 >
