[Mailman-Users] All recipients refused: (501, '5.0.0 Invalid domain name')

Caleb Epstein cae at bklyn.org
Wed Feb 6 18:27:16 CET 2002

On Wed, Feb 06, 2002 at 12:07:58PM -0500, Jon Carnes wrote:

> If this isn't in the FAQ, it is certainly discussed widely in the
> archives...
> >> I am a bit new to RH 7.2 I usually install 6.2. Is there some sort of
> >> a new twist to make sendmail work under RH 7.2 ?
> >
> > Yes, read the release notes.  RH7.x has sendmail default to only
> > listen on (localhost), and refuse any other connection.
> > You need to reconfigure your sendmail.cf to allow for external
> > connections.
> Good Luck

	FWIW, sendmail is an exceedingly poor MTA when it comes to
	Mailman.  The only way to get it to have reasonable throughput
	seems to be to put it in DeliveryMode=defer, which makes it
	hard to get posts out the door quickly.  They will get held up
	until the next queue run, and that can take a long time if
	there are DNS resolution problems or connection delays.
	Putting sendmail into defer mode seems to be the only way to
	stop it doing DNS resolution on every "RCPT TO:<luser at domaon>"
	that it gets.

	I HIGHLY recommend using any other MTA besides sendmail.  Exim
	is my MTA of choice, but I understand qmail and postfix are
	also good.

Caleb Epstein |  bklyn . org  |
    cae at    | Brooklyn Dust |         Go 'way!  You're bothering me!
bklyn dot org |   Bunny Mfg.  |

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