[Dovecot] Size of Mailbox affecting the sending of mail?

[Tim Smith]

Thanks Robert. That's what I thought. I couldn't make the connection. 
Will try the Postfix list!

On 24/08/12 12:06, Robert Schetterer wrote:
> Am 24.08.2012 12:53, schrieb Tim Smith:
>> Hi,
>>
>> I didn't know where to post this one so I'll start off with you guys and
>> then try Postfix if I'm barking up the wrong tree!
>>
>> 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!
>>
>> Sorry this is a bit vague but any advice on trying to diagnose the
>> problem would be appreciated.
>>
>> Thanks in advance!
>>
>> Tim
> sending mail ist usual smtp ( postfix ), not dovecot
> if no firewalls/proxies , slow lines , dns problems are involved, there
> may exist some policy or milter service which slows down smtp out from
> i.e tb, ask same question with logs and config in the postfix mail list
> size of mailbox should be not involved in this