On 18 Nov 2019, at 13:44, Alain Israel wrote:
This weekend when I launched Mailmate, I got the following warning
(attached). All my mailboxes (and I have a great number) got
desynchronized, and take forever (and even more) to resynchronize (and
I suspect I will get the same problem the next time I launch
Mailmate).
Probably not.
UIDVALIDITY is a tag used by an IMAP server to alert clients when the
UID values for messages in a mailbox may have changed. Nothing a client
like MM does can cause a mailbox's UIDVALIDITY value to change and when
that value changes there is no reliable strategy for a client other than
to fully resynch the mailbox.
The most common reason for UIDVALIDITY to change is if a server has had
some sort of failure that required a rebuild of mailboxes. For Exchange
servers, it also is rumored to happen whenever the mail admin sneezes.
What is the best solution to solve the problem? Reinstall Mailmate?
Anything else?
No, do not reinstall MailMate. MailMate didn't cause this and cannot
prevent it.
My other mail clients seem to work OK.
Importantly, the same problem happened when I opened Mailmate on 2
different computers.
Any IMAP client that maintains a persistent local cache of messages MUST
invalidate that cache when the UIDVALIDITY value of a mailbox changes
from what the client last saw. Some clients do not maintain such a cache
and many that do won't bother alerting the user when they need to do a
full resynch.
--
Bill Cole
[email protected] or [email protected]
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
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