We just recently upgraded to ListServ Classic, 14.4, and were hoping
to take advantage of the Mail-merge features to put the subscribers'
email address into our bottom banner.

It works pretty well, except that one ISP is bouncing our messages.

The only difference we can spot so far is in the Return-Path mail header.

If Mail-merge=yes, the return path looks like
this:Return-Path:<owner-saulnachem*skydaver**EARTHLINK*[log in to unmask]>

If Mail-merge=no, the return path looks like this:
   Return-Path: <[log in to unmask]>

We'd really like to use the mail-merge (to catch AOLiens that report
our list traffic as spam) but don't want to shut out our verizon.net
members.

Mail merge seems to really slow down processing, too.  We're using
postfix as our MTA (I think that's the right term ... a different
admin is handling that stuff)

Many thanks.

--
David Phillips
Molon Labe !
35° 46' N , 78° 48'W
Lose Not A Minute!