Re: Network problem (Connection refused) with 2.0.33?

Chris Adams (cadams@ro.com)
Wed, 14 Jan 1998 16:18:27 -0600 (CST)

Once upon a time, Alan Cox wrote
> > 10BaseT to the server) and try to open a bunch of SMTP connections (by
> > just typing "telnet sh1 smtp" and then quit as fast as I can).
> > Sometimes I get a connection refused.
>
> It is supposed to do that. See your sendmail configuration file. Sendmail
> shuts up when it has too many jobs going. For a windows luser mail target
> its best to run sendmail with always queue and suitable load tunings
> so that its always ready

Nope, we don't have sendmail set with connection limits. sendmail logs
a bunch of lines like:

Jan 14 15:59:23 sh1 sendmail[832]: NOQUEUE: SYSERR(root): getrequests: accept: No route to host

after the connections are refused sometimes (even when connecting from
the same system). Also, the monitoring program that checks dns, web,
smtp, pop3, ftp, and telnet on this server almost always reports a
problem connecting to FTP and SMTP at the same time (FTP is wu-ftpd, run
out of inetd, SMTP is sendmail running in daemon mode). But no other
types of connections ever fail that I can find.

-- 
Chris Adams - cadams@ro.com
System Administrator - Renaissance Internet Services
I don't speak for anybody but myself - that's enough trouble.