We're in the process of locking down ports for our Exchange 5.5 deployment. I've read the FAQ's and found ports required, but have a couple of questions.
If you have a Exchange Server with no IMC on it just mailboxes do you need TCP 25 SMTP enabled. I would think it should only be enabled for the servers with the IMC on it not on servers that only have mailboxes. X.400 TCP 102, Is this really required for Exchange Servers and if so what is it used for. Looking at TechNet, its used by older messaging systems? For PDC and BDC's with no Exchange. What ports do I need for those guys since they only perform authentification. Would that be TCP 137 & 139? Pete Pfefferkorn Senior Systems Engineer/Mail Administrator University of Cincinnati 51 Goodman Street Cincinnati, OH 45221 Phone - (513) 556-9076 Fax - (513) 556-2042 _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]

