I believe the terminology is different between sendmail and postfix and maybe that is why I am confused. With Sendmail I was able to use the masquerade_as flag and specify a A or or MX record that Sendmail would disguise all outgoing mail as. So, say my host is linux.domain.org and I have a mailhost at mail.domain.org, I was able to set masquerade_as('mail.domain.org') on linux.domain.org and all mail going out would appear to come from mail.domain.org rather than linux.domain.org. Is this possible with postfix? I know that I can make linux.domain.org look like domain.org using masquerade_domains but can I make it look like a different host? On a related note, anyone out there got any tricks for automatically dealing with large *map tables in postfix? Say I've got another mail server running LDAP and I want postfix to handle delivery and rejection for all mail in the domain, can I do something clever like query the ldap server to generate the map file for postfix? Seems like it should work but i am curious if anyone else is doing this sort of thing... Oh yea, reply offlist please. Thanks! -- _______________________________________________ Mike Neuharth ADCS Technology Specialist http://www.umn.edu/adcs =============================================== E-Mail : mjn at umn.edu Agenda : http://tinyurl.com/3jc2v _______________________________________________ "What is important, it seems to me, is not so much to defend a culture whose existence has never kept a man from going hungry, as to extract, from what is called culture, ideas whose compelling force is identical with that of hunger." -Antonin Artaud