Timo Sirainen, on 6/30/2007 6:43 PM, said the following:
v1.1 has now:
# Maximum number of connections allowed for a user. The limits are enforced
# separately for IMAP and POP3 connections, so you can move this setting
# inside protocol {} to have separate settings for them. NOTE: The user names
# are compared case-sensitively, so make sure your userdb returns usernames
# always using the same casing so users can't bypass this limit!
#mail_max_user_connections = 10
Is 10 a good default?
I'm assuming this is per IP?
In Courier, there were two settings:
MAXDAEMONS = 40
(total number of IMAP connections the server would accept)
and
MAXPERIP = 4
(number of connections per IP)
The values above were the defaults.
I think it would be a good thing to have both, *and* to allow for
setting the MAXPERIP on both a per user and global basis (if a per user
value is not provided it uses the global default).
Later, adding the ability to set them both on a per domain basis, and
the MAXPERIP on a per domain/user basis would be even better...
Currently new connections just fail authentication with a "Maximum
number of connections exceeded" error message. v2.0 hopefully will
instead disconnect the oldest idling connection with IMAP.
Very sensible - much better than just refusing the connection...
--
Best regards,
Charles
