[Elecraft] OT: ISP problems

[Simon Brown (HB9DRV)]

COMCAST blocks by sender email address (a poor practice), so if your email 
address has been used by a spam merchant (as mine is) then you can't talk to 
COMCAST members. Better providers block by originating IP address as well as 
other more sophisticated means.

Simon Brown, HB9DRV

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From: "Dave Martin" <w5deltahotelmike at gmail.com>

> Is it just mail to the comcast email addresses they block or do they
> actually block traffic from other mail servers?