I built a new Server 2003 box from scratch, installed Exchange 2003 clean, and did a mailbox move from the old Exch 2003 server (referenced in the related post below).
The new Exchange 2003 server is doing the *SAME THING*!
I can't figure out why these 2 Exch 2003 servers are adding routes to the routing table for the SMTP connections they are receiving.
I don't know if it is limited to just SMTP-related routes, because these 2 server only receive SMTP traffic from the Internet, and only from a mail-scrubbing service, so the number of external hosts connecting is limited.
I've checked other Exchange 2003 servers I manage, and none of them have these outrageous routing tables.
Referring to my earlier post on this (never resolved)