E-mails to Comcast addresses failing

Apparently, I am in the minority of users who deploy HTML DB apps on the internet for more or less public use rather than within a corporate network. But there are still hopefully others who share this issue.
My apps have been sending me automated e-mails using the HTMLDB_MAIL.SEND procedure to my comcast.net account for over a year. I have never had much of a problem, although AOL accounts are another story. Today, these e-mails suddenly stopped getting through. I did a fair bit of testing and my Yahoo and corporate accounts are getting the same e-mails and unaffected. I have contacted Comcast to see if they had changed their filtering somehow and they are looking into it. It's not a question of filtering as the e-mails never get to my account to begin with.
I was wondering if anyone might have seen this and/or have any insight into it. Thanks for any help.
Bill Holtzman
Reston, VA

Bill,
My apps have been sending me automated e-mails using
the HTMLDB_MAIL.SEND procedure to my comcast.net
account for over a year. I have never had much of a
problem, although AOL accounts are another story.
Today, these e-mails suddenly stopped getting
through. I did a fair bit of testing and my Yahoo and
corporate accounts are getting the same e-mails and
unaffected.
I have contacted Comcast to see if they
had changed their filtering somehow and they are
looking into it. It's not a question of filtering as
the e-mails never get to my account to begin with.This could be a case of RBL blocking - (Realtime Blackhole Listing). There are companies out there that take spamming complaints from all over the world and put certain service provides on these RBL lists. If there happened to be a spike in spam originating from the comcast.net domain that domain may have gotten black-listed. Generally, it's up to the service provider to prove to the RBL lister that they have dealt with the offending spammer before they're removed from the blacklist.
Just a tought.
Earl

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