OK, thank you. I did not happen since last time. To put the mailboxes
online again, does it make a difference if I press Resynchronize, or
Always resynchronize? (Retry did not do any good).
Alain
On 23 Feb 2017, at 15:17, Benny Kjær Nielsen wrote:
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
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