dccm timeout lets some spam through

Vernon Schryver vjs@calcite.rhyolite.com
Fri Apr 25 05:17:25 UTC 2003

> From: Gary Mills <mills@cc.UManitoba.CA>

> ...
> > Note that mi_rd_cmd() is a function in the sendmail libmilter library.
> > Those two messages suggest something was seriously wrong.
> Now, this is during the dccd database rebuild.  Is it possible that
> dccd closed the connection? ...

There is no conenction between dccm and dccd.  The DCC client-server
protocol uses UDP instead of TCP.

The message suggests that sendmail has closed the UNIX domain socket to dccm.
That can happen if the system is very slow.  If this happens, there
should be a complaint from sendmail in some log.
It might be worthwhile to review the DCC milter timeouts in sendmail.cf.
There are comments on that subject in the sample misc/dcc.m4 file.

Vernon Schryver    vjs@rhyolite.com

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