[112355] in North American Network Operators' Group
RE: Yahoo and their mail filters..
daemon@ATHENA.MIT.EDU (Erik (Caneris))
Tue Feb 24 22:12:39 2009
From: "Erik (Caneris)" <erik_list@caneris.com>
To: Joe Abley <jabley@hopcount.ca>, Micheal Patterson
<micheal@spmedicalgroup.com>
Date: Tue, 24 Feb 2009 22:11:24 -0500
In-Reply-To: <84365D16-ED9B-43F3-A8DF-A975D5C6EB51@hopcount.ca>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Ditto. They appear to use some strange form of greylisting combined with bl=
ocking. What seems to help is SPF and PTRs that match the EHLO your MTAs wi=
ll send. We didn't implement Domain Keys / DKIM.=20
On a related note, don't get me started on Hotmail. They used to (still do?=
) silently swallow mail into a black hole after accepting it. No NDR, no sp=
am folder, just good ol' mail shredding without anyone knowing. Again, SPF =
and PTRs seem to help.=20
Oh yeah, make sure you're not sending spam to them. That might help too. ;)
Erik
________________________________________
From: Joe Abley [jabley@hopcount.ca]
Sent: Tuesday, February 24, 2009 9:41 PM
To: Micheal Patterson
Cc: nanog@nanog.org
Subject: Re: Yahoo and their mail filters..
On 24 Feb 2009, at 21:27, Micheal Patterson wrote:
> This may be old news, but I've not been in the list for quite some
> time. At any rate, is anyone else having issues with Yahoo
> blocking / deferring legitimate emails?
Yes. Everybody else.
Joe
