Bad postmasters

OMFG, I just received a bounce from an e-mail I sent 6 months ago.

The mail was written to postmasters, complaining about their MTA's not understanding 45x codes. Sounds like that is just the beginning of their problems...

/me wonders if that "lost connection" was 6 months ago, or ran for 6 months before it got lost...

This is the Postfix program at host

I'm sorry to have to inform you that your message could not be be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can delete your own text from the attached returned message.

<>: lost connection with[] while sending message body

From: Stefano Rivera <>
Subject: Misconfigured mailservers (greylist incompatible)
Date: Mon, 17 Jul 2006 15:47:17 +0200
User-Agent: Mutt/1.5.9i

Sorry, but you guys have no technical contact listed anywhere, so I just mailed all the relevant postmasters.

Your outgoing mail servers don't seem to retry mail when they get temporary errors (45x series). The problem servers for me were [] and [].