i ran into the same issue pulled my hair out for a little bit. Make sure you have domain keys / dkim and spf implemented on your mail servers and domains. Once I did that all was smooth sailing. Carlos Alcantar Race Technologies, Inc. 101 Haskins Way South San Francisco, CA 94080 P: 650.246.8900 F: 650.246.8901 E: carlos ['at'] race.com -----Original Message----- From: Joe Abley [mailto:jabley@hopcount.ca] Sent: Tuesday, February 24, 2009 6:41 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