OT: ?? Comcast blocked my port 25

[Rick Bowers]

Hi all,

On Wednesday (21 January) I received a message from Comcast saying 
they have blocked port 25 on my modem (I didn't know you could 
configure a SPECIFIC modem for that). They pointed me to directions 
for making things work using port 587. It seems to work for one 
account, but not the others -- even though I set them all up the same.

I have run a mail server here at the house for more than 5 years. 
Until now, all has been well. In addition to no longer being able to 
send mails, all my incoming messages seem to be blocked. I haven't 
received any new messages since 20 January. If I send from my GMail 
account, the message eventually gets returned with a "connection 
timed out" error code.

Do any of you have any words of wisdom? I plan to call Comcast, but 
would like to understand why blocking port 25 also affected my 
inbound messages and why only one account works.  I'm guessing that a 
single account ID/password is being used. I use Eudora as my mail client.

Thanks!

~Rick