I just did a WWW search of the LSTOWN-L archives:

http://eva.dc.lsoft.com/scripts/wa.exe?S2=lstown-l&q=%27return+address+was+r
efused.%22%27&s=&f=&a=&b=

and did not find any other 'hits.'  Do they have anything in-common (do
they MX to the same host?).  Are they spoofed addresses?  Can you e-mail
them directly?  Some users' e-mail systems are not fully RFC compliant in
receiving e-mail i.e., they can process some SMTP client protocols, but not
others.

At 11:53 6/17/97 -0400, you wrote:
|Here is a new one on me that I am hoping you all can help me with. I have
|lately received bounced confirmation request mail from four potential
|subscribers and the reason given was
|
|        "Your message was not delivered because the return address was
refused."
|
|The message headers indicate a valid return address and there have been no
|problems with any of the other 400+ subscribers.
|
|I tried to clear the issue up with the postmasters of the sites involved
|and unfortunately all four sites are run by net newbies who don't have a
|clue about anything.
|
|So, any ideas would be greatly appreciated.
|
|Karen Strauss
|
|