[Mailman-Users] Question about excessive bounces

Ralf Hildebrandt Ralf.Hildebrandt at charite.de
Fri Apr 29 08:52:42 CEST 2011

* Mike.Mcrae at csiro.au <Mike.Mcrae at csiro.au>:
> Hi,
> I administrate two Mailman mailing lists at ScienceByEmailHTML and
> ScienceByEmailPlain. We have approximately 39 000 addresses in the
> former list, and about 1000 in the latter. I have a question about the
> bounces we receive.
> We have the lists set so after five bounces, the address is
> automatically disabled. An notification is sent alerting us to the
> disabled account, where we then delete the address from our own records
> as well as Mailman.
> Depending on the week, we can get over a hundred of these notifications
> which come in batches, arriving typically on Friday (although we also
> get waves coming in on Monday as well).

Well, since bounces are generated when mails are sent via the list,
the waves would correspond to about ever 5th posting on the list.

No traffic -> No bounces -> no unsubscriptions

Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt at charite.de | http://www.charite.de

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