[MlMt] iCloud UIDVALIDITY issue

[Brian LaFreda]

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 noticed that emails that I had previously deleted (FROM OTHER 
IMAP ACCOUNTS) were back in my Archive. Any explanation for that?

~/b

========

On 7 Jan 2015, at 5:48, Benny Kjær Nielsen wrote:

> Hi,
>
> I didn't get any replies to my first post, but I have a few more 
> details to share. It happened again for the (frustrated) user and this 
> time I got an important piece of the puzzle:
>
> 	C: J145 UID COPY 24505 Archive
> 	S: J145 NO [CORRUPTION] Mailbox has an invalid format
>
> The above simply means that MailMate asks to copy a message to the 
> “Archive” mailbox and the iCloud server replies that the 
> “Archive” mailbox is [corrupted][1]. Apparently this leads to the 
> server rebuilding the mailbox and assigning a new UIDVALIDITY value. 
> This then (correctly) triggers MailMate to redownload the mailbox.
>
> This is primarily a performance problem, but unfortunately it also 
> appears that any custom IMAP keywords assigned to the messages in the 
> mailbox are *lost*.
>
> The main purpose of these posts is to find out if any other users have 
> issues with losing tags assigned to messages in an iCloud account.
>
> If more users are found then I hope we might also find a way to 
> reproduce what looks like an iCloud server bug. That might lead to a 
> possible workaround (and a bug report for Apple). Note that as long as 
> I cannot reproduce the problem myself then I cannot claim with 100% 
> certainty that iCloud IMAP is to blame.
>
> Thanks in advance.
>
> -- 
> Benny
>
> [1]: https://tools.ietf.org/html/rfc5530#section-3
>
> On 5 Jan 2015, at 21:11, Benny Kjær Nielsen wrote:
>
>> Hi,
>>
>> I have a user (off list) with the following issue with an iCloud 
>> account (`imap.mail.me.com`):
>>
>> * Emails in the “Archive” mailbox are tagged with various values 
>> (and used for smart mailboxes).
>> * After some time (might be months) a change in the UIDVALIDITY value 
>> of the mailbox is reported by MailMate.
>> * This requires resynchronizing the mailbox (refetching all 
>> messages).
>>
>> If the change of UIDVALIDITY really happened then this is all fine, 
>> but the tags are lost which is of course very frustrating for the 
>> user.
>>
>> My question is simple: Has any one else experienced this problem with 
>> iCloud (or any other server)? If yes, do you have any details to 
>> share?
>>
>> Thanks in advance.
>>
>> -- 
>> Benny
> _______________________________________________
> mailmate mailing list
> mailmate at lists.freron.com
> http://lists.freron.com/listinfo/mailmate