sudden issues CentOS 5.10

[scooter6 at gmail.com]

Have been sending emails forever and a day from this server

They have always shown they're from  root at pdmfl.pdminc.net (which I know is
not really valid but that's another story - was never an issue until
sometime this afternoon)

After not receiving some automated emails from the server, I look at root
mail on server and saw these errors:

   ----- The following addresses had permanent fatal errors -----
<scott.ullmann at pdminc.net>
    (reason: 553 5.1.8 <root at pdmfl.pdminc.net>... Domain of sender address
root@
pdmfl.pdminc.net does not exist)

After changing .muttrc files to make from address  root at pdminc.net
After changing sendmail.cf to masquerade things etc

I can send command line email via sendmail and mutt

Brian - I can't however make reptmail work?
Sending reports using reptmail still results in bouncing back to root's
email with the above error
I even changed the FROM variable in reptmail to be "root at pdminc.net" but
still no joy

Any idea what I'm missing here?

I suspect our ISP probably noticed these emails badly formed and maybe
deleted MX record or something, I don't know....

Only thing that I can't get to work now is reptmail….

Thanks for any insight anyone can give

Scott
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