comcast does it again Port 25
Chip Marshall
chip at 2bithacker.net
Wed Apr 2 11:35:30 EDT 2008
On April 01, 2008, VirginSnow at vfemail.net sent me the following:
> Block port 25 for every subscriber until they apply for a port 25
> usage permit. Then unblock the port. If they abuse port 25, just
> yank their permit and re-block the port.
For people wanting to send legitimate e-mail, this wouldn't really be
all that helpful. Even without an outgoing port 25 block, your IP is
still going to be listed in the DUL DNSBLs, so your mail is going to get
blocked by a considerable number of destination hosts.
For residential outgoing e-mail, you're likely going to need a trusted
relay on non-DUL space somewhere if you want reasonable deliverability.
As much as I normally dislike Comcast, an outgoing port 25 block does
make a lot of sense with the current trends in spamming.
> Alternatively, they could just adopt net neutrality as company policy.
/me considers a 10-foot pole, decides it isn't long enough.
--
Chip Marshall <chip at 2bithacker.net> http://weblog.2bithacker.net/
GCM/IT d+(-) s+:++ a26>? C++ UB++++$ P+++$ L- E--- W++ N@ o K- w O M+
V-- PS+ PE Y+ PGP++ t+@ R@ tv@ b++@ DI++++ D+(-) G++ e>++ h>++ r-- y?
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