On Tue, Oct 31, 2023 at 01:38:13PM -0400, Michael W. Lucas via Postfix-users
wrote:
> That's what I would have thought. I can run postmap -s and postmap -q
> on the usual db files in /etc/postfix just fine, but when I try it on
> /var/db/postfix/postscreen_cache.db it just hangs:
That's expected. The "postmap -s" command takes a read lock, the
"postscreen" service holds a write lock. For snapshot reads, you
need LMDB not Berkeley DB.
Otherwise, you can read the database after stopping "postscreen".
--
Viktor.
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