MOVE command does not return CopyUID causing NullPointerException in jakarta.mail

[kumotaicho]

jakarta.mail (1.6.7) throws NullPointerException when using IMAPFolder.moveUIDMessages because the MOVE command does not return the CopyUID (greenmail 1.6.6).

[marcelmay]

GreenMail expected a UID MOVE command, but JavaMail actually only sends a MOVE without UID:

A10 MOVE 1:3 INBOX.target-folder
* 1 EXPUNGE
* 1 EXPUNGE
* 1 EXPUNGE
A10 OK MOVE completed.

According to the MOVE RFC, it should have been a UID MOVE like this:

C: a UID MOVE 42:69 foo
S: * OK [COPYUID 432432 42:69 1202:1229]
S: * 22 EXPUNGE
S: (more expunges)
S: a OK Done

It seems to be a known issue with JavaMail: jakartaee/mail-api#329

For now GreenMail will change to always return the COPYUID.

[marcelmay]

Thx alot for raising this issue @kumotaicho , there will be a small 1.6.7 release soon.

[kumotaicho]

Thank you very much for your quick reply and reaction @marcelmay !