[Mailman-Users] Sender domain must exist

[sunny]

I have a problem, when i try sending a mail to a list
from outside the domain the following error comes can
any one help me out.


Transcript of session follows -----
... while talking to host.anotherdomain.com.:
>>> MAIL From:<me at myhost.int.mydomain.org>
<<< 501 <me at myhost.int.mydomain.org>... Sender domain
must exist
501 <someone at anotherdomain.com>... Data format error

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