[pfx] Re: read postscreen database?
Wednesday, November 1, 2023, 4:38:13 AM, Michael W. Lucas via Postfix-users wrote: > On Tue, Oct 31, 2023 at 12:56:23PM -0400, Wietse Venema via Postfix-users > wrote: >> Michael W. Lucas via Postfix-users: >> > Hi, >> > >> > Is there a way to dump the postscreen database, showing which >> > addresses are cached and why? >> > >> > Running postfix 3.8 on FreeBSD. >> >> postmap -s >> > # ./postmap -s /var/db/postfix/postscreen_cache > Still hung. > Am I missing something obvious here? > Thanks, > ==ml Problem was a missing 'btree:' file_type, as in: # postmap -s btree:/var/db/postfix/postscreen_cache -- Cheers, Phil ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: read postscreen database?
Dnia 31.10.2023 o godz. 14:10:40 Wietse Venema via Postfix-users pisze: > > Or copy the file with a dumb program, and use postmnap to dump that > copy. Caution: the file contains holes and may grow when copied, > as holes are filled in with nulls. When GNU cp is used with --sparse=auto parameter, it should keep copies of sparse files being sparse. -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub." ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: read postscreen database?
Viktor Dukhovni via Postfix-users: > 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". Or copy the file with a dumb program, and use postmnap to dump that copy. Caution: the file contains holes and may grow when copied, as holes are filled in with nulls. Or use LMDB, which does not need a postscreen write lock. Postfix commands are not optimized to provide 'manual' access to an 'internal' interface. Wietse ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: read postscreen database?
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. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: read postscreen database?
On Tue, Oct 31, 2023 at 12:56:23PM -0400, Wietse Venema via Postfix-users wrote: > Michael W. Lucas via Postfix-users: > > Hi, > > > > Is there a way to dump the postscreen database, showing which > > addresses are cached and why? > > > > Running postfix 3.8 on FreeBSD. > > postmap -s > > The database contains tuples with (client IP address, list of > timestamps). Each timestamp indicates when the corresponding test > result expires, or whether a test is disabled. > > It's an internal interface, so tools that depend on it may break > as the format evolves. If you are not using LMDB, the file may > change while you're dumping it (LMDB reports the contents of a > temporary snapshot). 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: # postmap -s postscreen_cache I know that 80.94.95.181 is in there, because I'm watching the mail log and that host keeps trying. Querying for that same address also gives a hang: # postmap -q 80.94.95.181 postscreen_cache My cache is set to default: postscreen_cache_map = btree:$data_directory/postscreen_cache Thinking it might be a problem with the FreeBSD package, I compiled the pristine Postfix sources, went into bin/, and ran: # ./postmap -s /var/db/postfix/postscreen_cache Still hung. Am I missing something obvious here? Thanks, ==ml -- Michael W. Lucashttps://mwl.io/ author of: Absolute OpenBSD, SSH Mastery, git commit murder, Absolute FreeBSD, Butterfly Stomp Waltz, Forever Falls, etc... ### New books: DNSSEC Mastery, Letters to ed(1), $ git sync murder ### ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: read postscreen database?
Michael W. Lucas via Postfix-users: > Hi, > > Is there a way to dump the postscreen database, showing which > addresses are cached and why? > > Running postfix 3.8 on FreeBSD. postmap -s The database contains tuples with (client IP address, list of timestamps). Each timestamp indicates when the corresponding test result expires, or whether a test is disabled. It's an internal interface, so tools that depend on it may break as the format evolves. If you are not using LMDB, the file may change while you're dumping it (LMDB reports the contents of a temporary snapshot). Wietse ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: read postscreen database?
On 31.10.23 12:26, Michael W. Lucas via Postfix-users wrote: Is there a way to dump the postscreen database, showing which addresses are cached and why? I guess postmap -s could do that. http://www.postfix.org/postmap.1.html -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. I'm not interested in your website anymore. If you need cookies, bake them yourself. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
