On Mon, 13 May 2002, Frank Bonnet wrote:

> I receive such error messages since I've installed 1.1.8
>
> Out: 250 Ok
> In: DATA > Out: 354 End data with <CR><LF>.<CR><LF>
> Out: 451 Error: queue file write error
> In: QUIT
> Out: 221 Bye
>
> what does this means ? postfix error ou FreeBSD error ?

Vivek's suggestion is a good one - disk full. If you've verified that's
not it ...
... I believe it's an esoteric timeout issue. Wietse made me a patch that
logs an error when this occurs - below is part of the message from him, I'm
fairly sure he won't mind my including it here.

Wietse - the patch is working nicely for me. Every time I get one of these 451
"error during smtp session" postmaster mails, there is a timeout logged.
Perhaps it would be appropriate to return some other error and not
generate a local postmaster notification?

-- 
Charlie Watts
cewattsfrontier.net
Frontier Internet, Inc.
http://www.frontier.net/
Wietse Venema wrote:
> The smtpd to cleanup socket has a read/write timeout of $ipc_timeout
> seconds, which is 3600 seconds by default.
>
> The remote client to smtpd socket has a read/write timeout of
> $smtpd_timeout seconds, which is 300 seconds by default.
>
> So, the client would have to send something every 300 seconds, but
> not enough to fill a 4096 byte I/O buffer for the smtpd to cleanup
> socket in 3600 seconds.
>
> This is possible in theory. I'll add a timeout warning to the
> cleanup server. See patch below.
*** ./cleanup.c-        Mon Nov  5 11:25:58 2001
--- ./cleanup.c Wed May  8 16:19:54 2002
***************
*** 232,237 ****
--- 232,244 ----
      }
      /*
+      * Log something to make timeout errors easier to debug.
+      */
+     if (vstream_ftimeout(src))
+       msg_warn("%s: read timeout on %s",
+                state->queue_id, VSTREAM_PATH(src));
+
+     /*
       * Finish this message, and report the result status to the client.
       */
      attr_print(src, ATTR_FLAG_NONE,
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