Change sender e-mail address

When sending emails to the outside world, aix present itself as d_prod@production1.pdc.itercom.org.
This is causing some issue with our e-mail server.
So we need to change the name to d_prod@itercom.org...
Does any one know how this can be accomplished?

Thank you

See same post on Tek-Tips...

need a little help.
I searched the forum for "Tek-Tips", I didn't find anything.
I also try to search for "email", not there either...
help...

I meant the same post you made on the Tek-Tips forum:

It has 2 responces.