If UIDVALIDITY lookup fails, don't return failure to whole APPEND, just don't return APPENDUID.
If UIDVALIDITY lookup fails, don't return failure to whole APPEND, just
don't return APPENDUID.

Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot