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SubjectRe: [Fwd: sendmail fails to deliver mail with attachments in /var/spool/mqueue]
"Richard B. Johnson" <> said:
> On Fri, 10 Nov 2000, Andrea Arcangeli wrote:


> > Ok. So please now show a tcpdump trace during the `sendmail -q` so we
> > can see what's going wrong in the TCP connection to the smtp server:
> >
> > tcpdump port smtp

> I tried to send Jeff a 45 Megabyte file. It is still in the queue.


> It isn't a TCP/IP stack problem. It may be a memory problem. Every time
> sendmail spawns a child to send the file data, it crashes. That's
> why the file never gets sent!

In my experience, if you try to send large messages over unreliable
networks (we sometimes see 50 or more % losses due to chronical link
overload downstream) the connection breaks up and the messages take a long
time to get out of the door. No, not just Linux; our SunOS/Solaris/Linux
mail servers have all shown the same behaviour. Makes sense: Unless the
message is sent and ACKed, it stays put. SMTP has no "resume message" AFAIK...
This could also be an explanation for this phenomemnon.
Horst von Brand
Casilla 9G, Vin~a del Mar, Chile +56 32 672616
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