I’m seeing a significant amount of chatter on various lists that queues to Comcast are backing up right now. Looks to be something on their end.
Error messages are 421 “Try again later.” I’ll see if I can find someone at Comcast to give me some info.
Comcast announced today they’re blocking outbound port 25 for their residential customers. What does this mean for email marketers? Not much, unless your home connectivity is through Comcast and then you’ll just need to follow Comcast’s directions in order to send mail. What does it mean for email receivers? It means a lot of us will be seeing a lot less spam from infected Windows machines.
Over on the DMARC-Discuss list, Comcast announced they had turned on DMARC validation and companies that publish DMARC records should start receiving reports from Comcast.
Read MoreI updated the Wiki a few weeks ago when I heard, but don’t think I posted anything here. Comcast has changed their delisting form page to http://postmaster.comcast.net/block-removal-request.html. The old form is currently non-functional. You can fill it in, but it’s unconnected to anything on the back end and it won’t result in an IP being delisted from the various Comcast blocklists.
My understanding is that the old form may come back to life at some point, but it’s much safer to use the new form and the new Comcast Postmaster Site.