Re: Comcast's 6 recipient per second limit Victor Duchovni wrote:
> Specifically, if the ISP gives immediate (421 banner or EHLO/HELO)
> negative feedback on concurrency overshoot, and does not make that sticky
> (no subsequent blackout time for new connections) Postfix 2.5 should
> "converge" to the ISP's limits with the right feedback settings
Unfortunately, Comcast follows it up with a 4 hour blackout after you 
exceed their limits. :(

As a follow up, I was able to create a ticket to talk to a tech there in 
their "Customer Security Assurance" department that apparently is in 
charge of the blocks.  Their number is 856-317-7272 - good luck trying 
to find this on their site!  They also gave me a 48 hour window where 
they won't block me for exceeding their limits so that I can get the 
current campaign out and work with their technician for future mailings.

Also, here's a list of their outbound servers (someone else asked for this):

http://security.comcast.net/get-help/comcast-post-master-page.aspx

Thanks everyone for your help!

Kevin


