[Mailman-Users] peculiar problem

[Francis Jayakanth]

We have been using Mailman software for almost 6 years now without much of
a problem. Occasionally, some of our subscribers complain that they do not
receive mails from the mailman list. What I have been doing as a list
moderator in such situations is, deleting the existing id of such a user
and re-create the same id. Many-a-times this solution has worked. However,
it doesn't work for particular user. I have re-created the id for this
user at least 5 times but still the user in question doesn't get mailman
mails.  what do u think could be the problem. we are using 2.1.3, which
quite out-dated as compared to the latest version, 2.1.8 I will be
upgrading the version shortly.

Many thanks,

 - Francis