Hi Jerry, What is the UID VALIDITY associated with a given mailbox name before and after your migration?
If the UID VALIDITY is different, then the IMAP client will assume the two mailboxes are different and will attempt a whole download once again, which is a really lengthy process, and implies dropping all the emails downloaded before. This is due to an historical lack of truely immutable identifiers in IMAP, a point that this RFC addresses: - RFC-8474 IMAP Extension for Object Identifiers MAILBOXID: a unique identifier for a mailbox, stands for the mailbox name + UID validity pair EMAILID: unique identifier for an email If I'm right a good way to mitigate your production issue is to enforce the UID validity is the same before & after the migration, and hope your client apps did not all drop their cache. Cheers, Benoit On 22/10/2019 05:25, Jerry Malcolm wrote: > Deleting the iPhone email account and recreating does nothing. It says > 'all account data will be deleted.' Nope. After recreating the > account, it loads only the two emails that came in since switching IP > addresses and ignores the 1000+ other emails in the mailbox. > > Hopefully somebody has a workaround for this. > > > On 10/21/2019 9:55 PM, Jerry Malcolm wrote: >> I threw the switch this evening to fully move to my new upgraded 3.4 >> server. Basically, I just changed the IP address of the domain name >> for my mail server. I did a bunch of testing on several accounts >> using Thunderbird. Everything seems to be working. But then I get a >> phone call from a client that says all of his mail disappeared from >> his iPhone. I checked my iPhone and, yep, it's all gone from my >> iPhone on all of my different accounts except the new mail that has >> come in during the last few hours since moving to the new server. No >> errors or messages. Just when I go to a folder it briefly shows the >> email list, which then disappears and is replaced with a "No Mail" >> message. Fortunately, it's not deleting it from the server. All mail >> is still there when I go to Tbird. >> >> Is this some kind of 'security' thing that Apple has created to remove >> all mail from the app if the server IP address changes? If so, I'm >> not impressed with their thought process. I figure I'm going to start >> hearing it from other clients tomorrow. I'm about to delete an >> account on my iPhone and recreate it and see if loads all of the mail. >> >> Just wondering if anyone else has encountered this and if there is >> anything to tell clients. >> >> Thx >> >> Jerry >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: server-user-unsubscr...@james.apache.org >> For additional commands, e-mail: server-user-h...@james.apache.org >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: server-user-unsubscr...@james.apache.org > For additional commands, e-mail: server-user-h...@james.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: server-user-unsubscr...@james.apache.org For additional commands, e-mail: server-user-h...@james.apache.org
