From: Noel Jones (njonesmegan.vbhcs.org)
Date: Wed Nov 01 2006 - 16:37:30 CST

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At 03:42 PM 11/1/2006, EXT-Khan, Mark A wrote:
>Hello World:
> For those of you who have been around
> awhile you get
>that salutation. OK on a more serious note. I have
>installed postfix and
>it works perfectly with all mail servers except one.
>Unfortunately, I
>need to get mail from this server. When a person tries
>sending me mail
>we get the following errors:
>
>Nov 1 00:16:16 lts-smtpout-01 sendmail[1656]: [ID 801593
>mail.info]
>k9QJAs9C018885: to=<maklancertech.com>, delay=10:05:22,
>xdelay=00:03:29, mailer=esmtp, pri=1836317,
>relay=mail.lancertech.com.
>[24.173.132.254], dsn=4.0.0, stat=Deferred: Connection
>timed out with
>mail.lancertech.com.
>...
>Now here's the interesting part I can SEND mail to them! I
>just can't
>receive mail from them.

Does the receiving system log anything during the attempts
that time out? If not, this is a networking problem at the
sending site or maybe they are blocked by a firewall at
your site.
Seems like this must be a network issue of some type (MTU
is the usual suspect). A packet capture might show
something interesting.
http://www.postfix.org/DEBUG_README.html#sniffer

--
Noel Jones

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