When I receive mail stating that the userid is invalid or an unknown
user, I usually just delete the subscriber from the list.  If the rejection
mail is due to an unknown host, I usually delete the rejection mail, and
wait to see if the same error occurs in a couple of days.  Then I delete
the subscriber from the list.
 
On a recent occasion, I deleted a group of users from the same site,
due to being inavlid userids.   I later learned that the error message
was a in error as the rejection mail was caused by a fluke in their system.
 
What do other list owners/ LISTSERV postmasters do in handling rejection
mail?   If the rejection mail is for a Internet site, do you try PINGing
the host site?
 
I would say that most of you are like me in that I just don't have the
time to play around with rejection mail.   Just today for example;
I received rejection mail for an invalid user from yesterday, so I sent
test mail today to verify that the userid was no longer valid.
With another rejection mail, I PINGed the host, which came back ok, so
I ignored the rejection mail.
 
In the case above, where the error was due to fluke on the other system,
the user complained about my fast action to remove the user.   My response
was that I just don't have the time to check out every rejection mail.  I told
the user that there are probably other postmasters who would do the samething.
 
So what do you do?
Comments?   Discussion?
Duane