[Dovecot] any limitations running on a Mac?

[Terry Barnum]

On Feb 25, 2010, at 5:17 PM, Bradley Giesbrecht wrote:

> 
> On Feb 25, 2010, at 4:31 PM, Terry Barnum wrote:
> 
>> On Feb 25, 2010, at 3:29 PM, Bradley Giesbrecht wrote:
>> 
>>> On Feb 25, 2010, at 2:17 PM, Terry Barnum wrote:
>>> 
>>>> I have postfix/dovecot/mysql installed using MacPorts on a quad-core 2.8GHz MacPro running Snow Leopard (10.6.2). I moved the base mail directory to a pair of 10k RPM Raptors that are mirrored (/Volumes/email/) and everything seems to be working fine on an unused domain with very little traffic. I used imapsync to pull everything from the current mailserver to this test server to play with.
>>>> 
>>>> Our current mailserver's IMAP performance *really* suffers when an IMAP folder exceeds ~500MB or ~5k messages. I've become very tired of being the mailbox police trying to get my 20 users to delete email or divide into smaller mailboxes.
>>>> 
>>>> Are there folks on the list running postfix/dovecot on similar Mac hardware that can share their experiences? Specifically, are there any limitations (file descriptors, other?) that can impact performance I should be aware of? How does dovecot on the Mac deal with >500GB maildirs?
>>>> 
>>>> Is there a recommended tool for loading and testing the server? Postal?
>>>> 
>>>> I have 20 IMAP users, with a total of ~37GB of mail currently.
>>>> 
>>>> Thanks for any help and insight.
>>> 
>>> Mac OS X 10.5.8
>>> dovecot 1.2.9
>>> Two mirrored 7200rpm sata drives.
>>> dbox mailbox format
>> 
>> Thanks Brad. What hardware is this running on? Also, are you using the plain vanilla Apple RAID tool for mirroring or something else like SoftRAID?
> 
> 
> DP G5 2Ghz.
> 5.5GB ram.
> Apple Disk Utility software RAID 1.
> 
> Users are virtual in mysql.
> I also have a fairly busy application hitting mysql. Mysql seems to be cacheing around 120 threads which is less the config max and I usually have a around 700MB of free memory.
> 
> User Inbox count around 200 on 20 domains but we are a Print company and have to except large attachments and store indefinitely.

I looked at the wiki on dbox but shied away from it because the compatibility matrix said postfix didn't like it. Did I read that wrong?

Would you mind sharing your postfix -n and dovecot -n? Edited and offlist would be fine.

> Did you use macports to build dovecot?

Yes. 1.2.10.

> If so I'm working of some new packages you may be interested in. Mostly dovecot-sieve and dovecot-managesieve.

I have started to look at sieve and can see how it could be useful for my iPhone users. Currently they have to leave Mail.app running on their desktop to sort mail into IMAP folders since the phone doesn't have any sort by rules filters. So yes, I'm interested.

> Your welcome to hit me up off list if you have some non-dovecot questions.
> I'm small time compared to many here but I love dovecot and won't be looking elsewhere till I come home broke and bleeding.
> 
> 
> // Brad
> 

Terry Barnum
digital OutPost
San Diego, CA

http://www.dop.com
800/464-6434