Some mail from dragonfly.users being rejected

[Matthew Dillon]

:Hi.
:
:I subscribed to the dragonfly.users mailing list yesterday.  I received
:the confirmation messages and I have received both postings since them
:from Justin C. Sherrill.  However, the two replies to him and
:3 additional postings have been rejected from my mail server because
:crater is rejecting the sender verify connection.  Here is my mail log
:entry on one of the rejected ones.
:
:2008-01-28 11:41:08 H=crater.dragonflybsd.org [216.240.41.25] sender verify defer for <users-errors at crater.dragonflybsd.org>: could not connect to crater.dragonflybsd.org [216.240.41.25]: Connection refused
:2008-01-28 11:41:08 H=crater.dragonflybsd.org [216.240.41.25] F=<users-errors at crater.dragonflybsd.org> temporarily rejected RCPT <vince.dragonfly at hightek.org>: Could not complete sender verify callout
:
:Any idea why crater rejects some sender verify connections and not
:others?
:
:Good thing we run our own virtual dedicated server and have root access
:to our mail logs, or I would not have been able to determine why some of
:the list mail is not getting through.

    I found the logs on our end.  You are sending a 4xx code so we do retry,
    nothing should be getting lost.

    I see the 4xx rejection, then it retried 7 minutes later and it went
    through.

Jan 28 09:41:08 crater sendmail[59313]: m0SHagnA058931: to=<vince.dragonfly at hightek.org>, delay=00:01:07, xdelay=00:00:02, mailer=esmtp, pri=3094132, relay=mail.hightek.org. [207.210.96.149], dsn=4.3.0, stat=Deferred: 451 Could not complete sender verify callout
Jan 28 09:48:55 crater sendmail[59265]: m0SHagnA058931: to=<vince.dragonfly at hightek.org>, delay=00:08:54, xdelay=00:00:02, mailer=esmtp, pri=34352, relay=mail.hightek.org. [207.210.96.149], dsn=2.0.0, stat=Sent (OK id=1JJY6I-0001ud-RJ)

						-Matt