On 2013-04-23 23:21, Viktor Dukhovni wrote: >>> After sending END-OF-MESSAGE, the Postfix smtpd_proxy_CLIENT closes >>> > >the SMTP connection to the before-queue content filter. >> > >> > And this is exactly the problem: smtpd_proxy_CLIENT closes the >> > connection without sending >> > the QUIT command first, which is in violation of RFC 5321, section >> > "4.1.1.10. QUIT (QUIT)" > This is irrelevant. All TCP services need to handle mid-stream > client disconnect sensibly. QUIT is nice to send, but this is not > always possible, so deviating from RFC 5321 by not sending QUIT > is harmless.
For the OP, http://cr.yp.to/smtp/quit.html might be an explanation of the quit-problem. I suppose Postfix dropped client quit for similar reasons. Kristof
