It appears that Netcom Communications uses a dynamicly changing element
as part of the address that comes into the return-path and from fields of
headers. This element prepends some further stuff in front of the
sender's generally used email address/domain such that:
JohnSmith@ix.netcom.com shows up in extended headers in form of
JohnSmith@ix4.ix.netcom.com, then JohnSMithemail@example.com and so on.
This extended, variable element changes in every single email from such user.
Currently this user is bounced based on the longer form of dynamically
changing address not matching the original ix.netcom.com form with which
he joined the list.
Any recommendations on how to deal with this variable field?
It is, again, in both the From: and the Return-path fields.