Re: [e-mail problems] with infradead.org recipients

[Jeff Garzik <jeff@garzik.org>]

Oleg Verych wrote:
> Hi, guys. I have problems with you.
>
> Is some special NS or route needed? I can add, no problem (ISP problems
> are very unlikely, but possible ;).
>
> Final-Recipient: RFC822; arjan infradead.org
> Action: failed
> Status: 4.4.7
> Remote-MTA: DNS; canuck.infradead.org
> Last-Attempt-Date: Sun, 19 Nov 2006 14:27:52 +0100
>
> Final-Recipient: RFC822; matthew wil.cx
> Action: delayed
> Status: 4.4.1
> Remote-MTA: DNS; canuck.infradead.org
> Last-Attempt-Date: Sun, 19 Nov 2006 12:49:26 +0100
> Will-Retry-Until: Fri, 24 Nov 2006 08:43:49 +0100


I bet this is greylisting on infradead.org.  Greylisting will put 
unknown IPs into a database, and /temporarily/ reject the mail, asking 
for the remote mail server to queue it.  Once $GREYLIST_TIME has passed, 
infradead.org will accept the email.  This successfully filters out a 
lot of spammers, and broken SMTP servers that have broken retransmit 
[rules].

You probably need to fix the mail server delivering the mails to 
properly retransmit...

	Jeff



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