[K12OSN] Can send, but not receive, emails from clients

[cisna-barry at wc235.k12.il.us]

catl,

Forgot to mention. try using your ISP's <outgoing> server address in
TBird. NOT your own email server.
EG: " smtp . myispmailserver . net ". This should not effect your incoming
mail,,though.lots of national isp's are blocking port 25 but usually this
is outgoing port. DO you have this currently configured this way in TBird?
You can setup Smart Host- directive via M4 config file in sendmail easily
if this is the case. this let's your smtp server "pipe" your mail through
their mailserver into,out of your mail server.

Barry