Error between two postfix "Command not recognized", RCPT iscut in two words
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From: Ralf Hildebrandt on 9 Jul 2010 09:45 * Thomas POINDESSOUS <poindessous537(a)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 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.hildebrandt(a)charite.de | http://www.charite.de
From: Ralf Hildebrandt on 9 Jul 2010 10:02 * poindessous537(a)foncia.fr <poindessous537(a)foncia.fr>: > 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 ? Yes. It causes nothing but grief :) -- 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.hildebrandt(a)charite.de | http://www.charite.de
From: Victor Duchovni on 9 Jul 2010 10:08
On Fri, Jul 09, 2010 at 03:58:12PM +0200, poindessous537(a)foncia.fr wrote: > ... a special filter which protects "smtp server". > > Do you think I should ask to disable it ? Yes, always. The SMTP inspection feature notoriously does more harm than good. -- Viktor. |