Thanks guys, Chris, I saw that existed.. and I do see that it's a lot more straightforward. Lennart- the fax piece is something on my exchange server so as long as the headers are correct it will interpret and route to the physical fax server accordingly. The problem is that I can't seem to discover through googling what these headers look like. Oh well, something for the castelle faxpress people (after $250/hr for support ugg). The smtp sendable gateway is probably some plugin they have available and I'll check it out. Just figured someone may have run into this and found a workaround. Thanks chieftains, Chrisbob -----Original Message----- From: Lennart Regebro [mailto:regebro@gmail.com] Sent: Thursday, September 01, 2005 4:27 AM To: Chris Larsen Cc: zope@zope.org Subject: Re: [Zope] Sending Fax through MailHost What you are trying to do has nothing with SMTP to do. It's fully MS Outlook specific. You would have to write a mailhost that does not use SMTP, but integrated directly to an outlook server. I have no idea of how to do that, or even if it's possible. What you might want to do instead, is too see if you can make the fax software you are using be a SMTP-mail to fax gateway. I.e., if you somehow can send SMTP mails to it. In that case, the mail adress would be something like "555-28376@fax.your.server", which would be a valid SMTP address.