doveadm -u "*mask*" makes no sense.
The “index” that was in the first line was dropped out of my further examples. But now where was there a “*mask*”.
what command are you trying to run?
Error: User listing returned failure
doveadm: Error: Failed to iterate through some users
That is, process all the users in sqldomain.tld and reindex all their mailboxes.
(As works without a wildcard for a single local user in the first line.)
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SHERRI DOES NOT "GOT BACK" Bart chalkboard Ep. AABF07
Check dovecot logs why user listing returned an error. Auth process is producing the error.