Received the following note from Pivotal Veracity support alerting folks to an existing problem at Yahoo! who's handling inbound mail for the ATT family of domains:

• att.net
• wireless.att.com
• sbcglobal.com
• bellsouth.net

Dear Clients,

Last week Pivotal Veracity personnel noticed a large portion of client’s email campaigns, bound for AT&T, landing in the spam folder & inbox simultaneously. In case you were not aware, AT&T’s back end is being serviced by Yahoo!.

PV Personnel reached out to Yahoo to determine if there was a global issue. According to Yahoo!'s postmaster team there are servers that are not up to date with the rest of Yahoo’s infrastructure. The Postmaster team is working on the problem and hopes to have it resolved by the end of the week or at the latest early next week.

Implications Clients should potentially expect to see a portion of their email, for AT&T, land in the spam folder because of the out of date filtering rules on those mail servers. Normal email delivery will be restored once the filtering rules are updated on those servers.

If you have any questions about delivery to AT&T or Yahoo! please don't hesitate to contact our support team here.

Sincerely, -The pvIQ Support Team

Also blogged about it over at the Bronto blog.

Chris Wheeler
Director of Deliverability, Bronto Software

Comments

Just as a clarification, we are not seeing a "large portion" of our traffic being impacted by this. Nor is this an issue wherein some servers are running outdated packages/filters. There is some bulking issue, and we're addressing that now.

Updates to come.