At 10:23 PM 1/23/2007 -0500, Guy wrote:
My IP address tends to be blacklisted because it is DHCP assigned. So I
have been forwarding my outbound email to smtp.comcast.net.
There are many other services available with a much better reputation, and
excellent deliverability. I use controlled-mail.com.
Does anyone have current info on Comcast.net?
Comcast is one of the worst for confusing everyone trying to pin down their
server addresses. I use their entire IP blocks:
24.147.0.0/16 65536
63.240.76.0/23 512
204.127.0.0/16 65536
216.148.227.0-255 256
Totals: 4 131840
My requirements may be somewhat different than yours, however. I use this
list for *whitelisting* not *blacklisting*. If the IP is within one of
these ranges, we assume it really is comcast.net, and tag it with a 'B'
rating. Recipients who will accept B-rated mail can then receive mail from
comcast.net with no false rejects.
This list below is what I am using. Where I have "new" is from this year.
I just found one of them a few minutes ago! Seems like a never ending
battle.
"ip4:63.240.76.26 " ; old
"ip4:63.240.77.83 " ; new
"ip4:204.127.192.0/25 " ; new
"ip4:204.127.198.0/25 " ; old combined
"ip4:204.127.200.0/25 " ; new
"ip4:204.127.202.0/25 " ; old combined
"ip4:204.127.225.0/25 " ; new
"ip4:206.18.177.0/25 " ; new <*** Looks like I need to add this
one to my list. Thanks.
"ip4:216.148.227.0/24 " ; new
Does anyone know if comcast.net will publish a spf record anytime soon?
Not likely. They have no real incentive to do so, and the mere mention of
the word 'spam' will shut down any communication with them. This will
change only when they start hearing from their own customers, like
yourself, that their reputation is hurting their business. This may happen
when reputation systems like the one I am working on at open-mail.org,
become more widely used.
-- Dave
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