On 27/08/2012 5:03 PM, Timo Sirainen wrote:
On 24.8.2012, at 13.53, Tim Smith wrote:
Having set up my mail server (Dovecot/Postfix), users are experiencing long
delays (a couple of minutes) when sending mail from mail client such as
Thunderbird - this increases with attachments. Having had a brief discussion
with someone, they mentioned that the reason that this may be to do with the
size of the mailbox. I couldn't see the rationale behind this unless Dovecot is
syncing the mailbox after every sent mail (due to possibly saving the sent
item?) The mail is being delivered successfully but the amount of time it is
taking to complete the action is far too long!
Other than the bandwidth others already mentioned, the only reason it could be
Dovecot's fault is exactly the size of the Sent mailbox. How large is that and
what mailbox format are you using?
I missed the original message, but if your users are using Thunderbird
I've seen slow sending of email be caused by a large number of temporary
files being created by Thunderbird (it doesn't clean up properly), and
so when it goes to create a new temporary file it goes very slowly - it
may be worth checking the users mailboxes to see if they have a large
number of temporary files with a similar name but different number (I
forget the name, sorry - it might start with something like "nsmail",
but may not).
Stop Thunderbird, clear out the temporary files, and sending becomes
much faster (if this is the cause of the problem).
Regards,
Michael.
