Multiple messages with the same GUID

[Ron Garret]

I somehow ended up with multiple messages in the same mailbox with the same GUID.  All of the messages are identical (AFAICT) but getting multiple responses for doveadm fetch for a particular guid is screwing up one of my applications.

When I searched for the offending guid in dovecot-uidlist I found this:

4927 :1632837493.M663171P23208.vm1.rngh.net,S=3942258,W=3993573
4928 G1632837493.M663171P23208.vm1.rngh.net,S=3942258,W=3993573 :1632880292.M915983P1968.vm1.rngh.net,S=3942258,W=3993573
4929 G1632837493.M663171P23208.vm1.rngh.net,S=3942258,W=3993573 :1632880303.M863130P547.vm1.rngh.net,S=3942258,W=3993573
4930 G1632837493.M663171P23208.vm1.rngh.net,S=3942258,W=3993573 :1632880303.M863131P547.vm1.rngh.net,S=3942258,W=3993573

I tried to figure this out by looking at:

https://doc.dovecot.org/admin_manual/mailbox_formats/maildir/

but this case doesn’t seem to be covered there.  Can someone please help me figure out what might have happened to produce this situation?  Is there a way to recover from it?

Thanks,
rg