[MlMt] iCloud UIDVALIDITY issue

[Benny Kjær Nielsen]

On 7 Jan 2015, at 15:49, Benny Kjær Nielsen wrote:

> On 7 Jan 2015, at 15:38, Brian LaFreda wrote:
>
>> Interesting issue that accompanied the resync the other day...
>>
>> So, as described in the last email I send you about an hour ago, some 
>> tags from other IMAP accounts were changed to a previous state. So 
>> when I went back into my Archive to re-tag everything (for the 7th or 
>> 8th time),
>
> I strongly suggest you don't put too much effort into that before I 
> either fix a bug or come up with some workaround for the (assumed) 
> server bug.

I've tried reproducing the problem by simply using a lot of tags on 
messages in an iCloud account. It does result in weird behavior where 
the server starts to ignore some IMAP keywords. At one point requests to 
store flags on the server was also hanging, but I couldn't trigger a 
server-side corrupted mailbox.

I should do some kind of systematic experiment to find the exact limits 
of a given IMAP server -- also analyzing what happens when moving tagged 
messages between mailboxes, but for now my general recommendation would 
be to keep the number of tags used in a single mailbox below 25.

-- 
Benny