On 22 Feb 2017, at 19:04, Alain Israel wrote:
When I arrived this morning, I got the following message (below), and all my mailboxes were offline. I pressed « always resynchronize » and everything resumed, albeit quite slowly. Is this diagnostic of something specific (it is the first time it occurs in about a year)?
The UIDVALIDITY value for an IMAP mailbox is what an email client uses to determine if a mailbox is still the same mailbox. The name is not sufficient, because another email client might have deleted a mailbox and then created a new one with the same name. This could lead to an incorrect mapping between local emails and server emails. Therefore, a changed UIDVALIDITY value for a mailbox signals that the email client should forget everything about the mailbox and re-synchronize it. It's the only safe option.
I cannot tell you why this happened, but if it happens on a regular basis then we can debug to make sure that MailMate does not behave incorrectly (I doubt it since if it did then it would likely happen very often).
Some IMAP servers are pretty buggy regarding the UIDVALIDITY value, but there's not much MailMate can do about that.
Resynchronize - Always Resynchronize - Retry
The “Always Resynchronize” button was implemented to help out with such buggy servers. I won't recommend using it in general and the setting is forgotten as soon as MailMate is relaunched.
(One could imagine a server which deletes certain empty IMAP mailboxes. This could trigger new UIDVALIDITY values on a regular basis, but in this case it's not really doing any harm.)
-- Benny _______________________________________________ mailmate mailing list mailmate@lists.freron.com https://lists.freron.com/listinfo/mailmate
