NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
 ·Pacific Bell - SBC
| reply to technick
Re: who uses comcast email?
said by technick  :Not sure if anyone ever thought about this or not. There's tons of comcast ip addresses that are listed on RBL's including Spamhaus. I hope Comcast takes steps to get ip addresses un-blackholed. 99% of those IP addresses are dynamically assigned residential accounts, a large number of which host compromised computers running spamming proxies. Until Comcast implements outbound port 25 blocking across the board, I hope those IP addresses remain listed. Otherwise I'll have to create my own, local blacklist to cover them.
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Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
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sweintz
Premium
join:2002-03-01
Hamden, CT
| said by NormanS :99% of those IP addresses are dynamically assigned residential accounts, a large number of which host compromised computers running spamming proxies. Until Comcast implements outbound port 25 blocking across the board, I hope those IP addresses remain listed. Otherwise I'll have to create my own, local blacklist to cover them. There are plenty of RBL's that specifically list dynamic IP's. None have 100% accurate, but are close enough.
The sorbs DUL comes to mind. I think NJABL has a dynamic list as well. |
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NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC
| said by sweintz :There are plenty of RBL's that specifically list dynamic IP's. None have 100% accurate, but are close enough. The sorbs DUL comes to mind. I think NJABL has a dynamic list as well. And the "XBL" part of the Spamhaus 'sbl-xbl.spamhaus.org' list. I am not sure that the "SBL" side deals with open proxies; the Spamhaus site states that it does not.
Also, AFAIK, the Comcasts output SMTP servers used for their residential accounts are not blocked by either SBL, or XBL. SPEWS occasionally catches them; but I don't use SPEWS.
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Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
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