[Dovecot] Courier-imap + dovecot simultaneously?

Charles Marcus CMarcus at Media-Brokers.com
Mon Apr 30 00:41:38 EEST 2007

>> I have a client I've been trying to talk into switching from courier 
>> to dovecot, but the owner of the company wants me to set up two 
>> different accounts in Thunderbird (I finally got him switched to that 
>> from outlook express), one accessing his account through courier, and 
>> one through dovecot, so he can compare the speed...
>> Is this even possible? I've never tried it before, so before I spend a 
>> lot of time, I want to know if I'd be wasting it (my time)...

> Yes, it's possible.  You just have to set the 2 servers up on separate 
> ports and make sure the correct ports are set in Thunderbird.  I'm not 
> sure what would happen with dovecot's index files but most likely if 
> courier does something goofy they will just get rebuilt.

Have you actually done it?

I have Dovecot set up on port 10993, but before I actually fire it up, I 
want to make sure it isn't going to hose anything. I will backup the 
maildirs in question before I do bring dovecot up, of course, but still 
wouldn't want to do anything that might mess anything up.

The index files are my main concern.

I guess the safest thing to do is to tell postfix to queue his mail so 
nothing gets delivered while he's messing around, then let him play - 
see how fast folders load, etc (he's got some pretty big ones, 30,000 
messages or more)...

Thanks - I'll wait and see if anyone else chimes in - I like to get more 
than one opinion, and to hear from at least one person who has actually 
done what I'm about to do, when trying something like this (that I've 
never done before)...


Best regards,


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