[Mailman-Users] Unexplained unsubscribes of yahoo.com email addresses

Brian Carpenter brian at emwd.com
Mon Mar 1 17:08:14 CET 2010

> -----Original Message-----
> From: mailman-users-bounces+brian=emwd.com at python.org [mailto:mailman-
> users-bounces+brian=emwd.com at python.org] On Behalf Of J.R. Constance
> Sent: Monday, March 01, 2010 10:23 AM
> To: Mailman Users
> Subject: [Mailman-Users] Unexplained unsubscribes of yahoo.com email
> addresses
> I run a few Mailman mailing lists (2.1.12cp3 - 42 lists with 500
> subscribers max on each list) for a professional association that I
> belong to. Over the last three days I have had a series of unexplained
> unsubscribes from one of the lists, and almost all of the unsubscribed
> email addresses are yahoo.com addresses. None of the admins has done a
> mass removal, so is there any way for me to determine why these email
> addresses were unsubscribed? Anything in the log files?
> This is the only list that I am seeing this on.
> Thanks,
> J.R.
> J.R. Constance
> Rodric Consulting, LLC
> jrc at rodricon.com
> Phone:  720.339.3646

You can check your mail log to see if you are seeing a high number of Yahoo!
deferrals. If so then those deferrals may be behind those unsubscribes,
especially if they have been unsubscribed due to excessive bounces. Checking
the mailman/logs/subscribe log should show you the reason behind these
recent unsubscribes.


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