On 19/1/2016 3:31 μμ, Timo Sirainen wrote:
Change it the other way around:
remote 127.0.0.1 { protocol imap { ... } }
Thank you for your advice Timo (on "remote" blocks).
So, the "remote" block should not have any parent (i.e. should not be included in any other block)?
Webmail probably just quickly opens and closes the connections, so there aren't any connections that are visible for more than a fraction of a second.
On the real issue: I am trying to identify why (just recently) webmail users recently are increasingly facing the error: "ERROR : Connection dropped by imap-server".
The docs I've read on webmail (squirrelmail) affirm your indication that webmail IMAP connections should be closing quickly, so these should not be the cause of the errors.
A few days ago, when I increased the global value of "mail_max_userip_connections", I stopped seeing errors "Maximum number of connections from user+IP exceeded" in dovecot log. However, the above problem continues in webmail.
Using the command "doveadm who" I see relatively few connections, so I am wondering what may be the cause.
Any ideas will be appreciated!
Thanks, Nick