Back in September, I migrated an announcement-only mailing list from
Yahoo to mailman, with approximately 1800 email addresses. An unknown
number of these were dead.
The mailing list I am running sends out one, maybe two, emails a month,
at around the same time of the month. It's not a discussion list, so
there are no replies from subscribers.
I expected that the first month, there would be a lot of automatic
unsubscriptions, as the dead addresses were noted and removed, and then
in subsequent months there might only be a trickle of automatic
removals. To my surprise though, there has been a steady pattern of mass
unsubscriptions each month, around 100-200 each month following the
I'm not sure whether this is normal (if it is, unless the number of
unsubscriptions begins to fall soon, I'll soon be left with no
subscribers) or whether I'm doing something wrong.
Here are my bounce processing settings:
bounce_processing = Yes
bounce_score_threshold = 4.0
bounce_info_stale_after = 65
bounce_you_are_disabled_warnings = 3
bounce_you_are_disabled_warnings_interval = 10
Remembering that I only send out 1 or 2 emails every 30 days (give or
take a couple of days in either direction), does this seem reasonable?
Or is my bounce processing too strict?
Thanks in advance,