[Mailman-Users] lists name caracters

Mark Sapiro mark at msapiro.net
Mon Mar 17 17:08:38 CET 2008

Antonio Guerrero wrote:
>Actually, our lists name includes a dot '.' in their names (i.e.
>list.help at domain.com)
>In our new hosting, they are unable to configure mailman in order to accept
>the '.' dot character in the list name. If I create a list with a dot in the
>name it will be created ok, you can subscribe people, but when we send a
>mail to list.help at domain.com it will not be delivered and says:
>This is an automatically generated Delivery Status Notification
>Delivery to the following recipient failed permanently:
> list.help at domain.com
>Technical details of permanent failure:
>PERM_FAILURE: SMTP Error (state 13): 550 sorry, no mailbox here by that
>name. (#5.7.17)

This has nothing to do with Mailman per se. This is an issue with the
incoming MTA that receives the mail for delivery to mailman.

There are three possibilities that I see.

The first possibility is that list creation requires a manual 'alias'
installation by the host and they have not done that, and the problem
has nothing to do with the '.', but rather is due to this being a new
list and the mail delivery aliases for it not being installed.

The second possibility is that they have some automated way of
installing aliases or recognizing list names which is confused by the

The third possibility is the MTA is configured to treat a '.' in the
local part in some special way.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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