why are my mails not reaching the list?

[sandip <sandip@escortsmumbai.com>]

i do not know what is wrong?

when i try to send the mails to debian-user@lists.debian.org from mutt,
it doesnt reach the list. however, when i send it from mozilla, it
reaches the list.

i can send mail to all e-mail addresses from mutt.

whats wrong?

thanx

- sandip