Link to home
Create AccountLog in
Email Software

Email Software

--

Questions

--

Followers

Top Experts

Avatar of Member_2_1108982
Member_2_1108982

GNU Mailman - Duplicate Email Problem
I am having problems with a mailman recipient receiving multiple copies of the same email. Here's the situation:

We have a new Principal starting the school in a few months and in the meantime, the Principal wants to be involved in emails that go to our mailing lists. Her email address is linda@external.com

Our current principal also needs to remain in the loop. Her email address is sabrina@internal.com.

Our mailing lists are: Staff, Faculty, Students, Parents

Linda@external.com has been added to all of the above lists.
Sabrina@internal.com is also a member of all of the above lists.

Now, when phil@internal.com sends out a school-wide email to Staff, Faculty, Students, and Parents, sabrina@internal.com only receives 1 copy. Linda@external.com receives 4 copies of it.

Note that the example above is simplified as we actually have 20-30 mailing lists, so the new principal linda@external.com mailbox is continually flooded with duplicate emails.

The nodupes flag for linda@external.com doesn't seem to make a difference. Any ideas on why this works as intended with sabrina@internal.com, yet linda@external.com gets flooded with duplicates?

Zero AI Policy

We believe in human intelligence. Our moderation policy strictly prohibits the use of LLM content in our Q&A threads.


Avatar of PsiCopPsiCop🇺🇸

I would suspect is the issue of exactly how Linda was added to the requisite mailing lists.

If Linda goes to the main subscription page for any of the mailing lists to which she is subscribed, and logs in (with Manage my Subscription), there is a button on the main screen that should let her list all mailing lists to which she is subscribed. Does she see them all?

Also, exactly which VERSION of Mailman?

Avatar of Member_2_1108982Member_2_1108982

ASKER

Well, Linda has never actually logged in or subscribed to any mailman list. As the administrator I just manually added her to them. However, I am certain that Sabrina never did this either - she was manually added as well once apon a time.

Mailman is 2.1.3.

I will try to log in as Linda and see what I can as well.

Avatar of PsiCopPsiCop🇺🇸

I'd look at whether or not Mailman considers Linda as having one ID or many.

I also note in passing that Mailman v2.1.3 is rather old. Current version is v2.1.9 and there are a number of security fixes in it.

Reward 1Reward 2Reward 3Reward 4Reward 5Reward 6

EARN REWARDS FOR ASKING, ANSWERING, AND MORE.

Earn free swag for participating on the platform.


After some significant screwing around, as far as I can tell Linda only has 1 ID inside of Mailman.

Any other ideas at what I can look into?


ASKER CERTIFIED SOLUTION
Avatar of PsiCopPsiCop🇺🇸

Link to home
membership
Log in or create a free account to see answer.
Signing up is free and takes 30 seconds. No credit card required.
Create Account
Email Software

Email Software

--

Questions

--

Followers

Top Experts

An email client, email reader or more formally mail user agent (MUA) is a computer program used to access and manage a user's email. A web application that provides message management, composition, and reception functions is sometimes also considered an email client, but more commonly referred to as webmail.