On Thu, 14 Dec 2000 08:22:22 -0700 (MST) D J Atkinson dj@pcisys.net wrote:

...

You are talking about different queue runners. He's talking about the queue runner in sendmail, and you are talking about Mailman.

No. I was talking about the qrunner in Mailman. With synchronous DNS sendmail won't accept messages if it can't pick out an MX host. Those sit in the mailman queue and bog things down.

In which case the solution is to configure your MTA to not DNS verify deliveries from localhost.