This is now a busy mailserver with about 100spam/min at busy times. It looks like it's not syslog related now. The postgrey config is: POSTGREY_OPTS="--inet=127.0.0.1:60000 --delay=40" POSTGREY_TEXT="Server is not keen on you, see http://greylist.example.com/" Here are the syslog entries from when it ides. Sep 3 06:52:04 localhost postgrey[10558]: cleaning main database finished. before: 274048, after: 63815 Sep 3 06:52:04 localhost postgrey[10558]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 4 02:04:10 localhost postgrey[12464]: cleaning main database finished. before: 289400, after: 49192 Sep 4 02:04:10 localhost postgrey[12464]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 4 03:11:01 localhost postgrey[8868]: cleaning main database finished. before: 290126, after: 48884 Sep 4 03:11:01 localhost postgrey[8868]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 4 04:21:39 localhost postgrey[10136]: cleaning main database finished. before: 290793, after: 48493 Sep 4 04:21:39 localhost postgrey[10136]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 4 05:31:11 localhost postgrey[11328]: cleaning main database finished. before: 291073, after: 47722 Sep 4 05:31:11 localhost postgrey[11328]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 3 02:13:29 localhost postgrey[14053]: cleaning main database finished. before: 271150, after: 65691 Sep 3 02:13:29 localhost postgrey[14053]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 3 03:20:52 localhost postgrey[6832]: cleaning main database finished. before: 271584, after: 64917 Sep 3 03:20:52 localhost postgrey[6832]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 3 04:31:01 localhost postgrey[7976]: cleaning main database finished. before: 272450, after: 64504 Sep 3 04:31:01 localhost postgrey[7976]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 3 05:40:56 localhost postgrey[9311]: cleaning main database finished. before: 273488, after: 64383 Sep 3 05:40:56 localhost postgrey[9311]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 2 02:30:27 localhost postgrey[3926]: cleaning main database finished. before: 242519, after: 69659 Sep 2 02:30:27 localhost postgrey[3926]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 2 03:40:58 localhost postgrey[10336]: cleaning main database finished. before: 243533, after: 69331 Sep 2 03:40:58 localhost postgrey[10336]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 2 04:50:44 localhost postgrey[11620]: cleaning main database finished. before: 244632, after: 69420 Sep 2 04:50:44 localhost postgrey[11620]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 2 06:00:55 localhost postgrey[12791]: cleaning main database finished. before: 245618, after: 68625 Sep 2 06:00:55 localhost postgrey[12791]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 1 02:22:03 localhost postgrey[21649]: cleaning main database finished. before: 207387, after: 58805 Sep 1 02:22:03 localhost postgrey[21649]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 1 03:31:20 localhost postgrey[14639]: cleaning main database finished. before: 208601, after: 58220 Sep 1 03:31:20 localhost postgrey[14639]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 1 04:41:26 localhost postgrey[15918]: cleaning main database finished. before: 210020, after: 58774 Sep 1 04:41:26 localhost postgrey[15918]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Sep 1 05:51:18 localhost postgrey[17204]: cleaning main database finished. before: 210987, after: 59741 Sep 1 05:51:18 localhost postgrey[17204]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Aug 31 02:48:45 localhost postgrey[12033]: cleaning main database finished. before: 174742, after: 54620 Aug 31 02:48:45 localhost postgrey[12033]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Aug 31 03:50:31 localhost postgrey[17732]: cleaning main database finished. before: 175996, after: 55874 Aug 31 03:50:31 localhost postgrey[17732]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Aug 31 05:00:32 localhost postgrey[19023]: cleaning main database finished. before: 177071, after: 56949 Aug 31 05:00:32 localhost postgrey[19023]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Aug 31 06:10:46 localhost postgrey[20385]: cleaning main database finished. before: 178708, after: 58586 Aug 31 06:10:46 localhost postgrey[20385]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Aug 30 02:56:14 localhost postgrey[6431]: cleaning main database finished. before: 150449, after: 59619 Aug 30 02:56:14 localhost postgrey[6431]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. Aug 30 04:00:25 localhost postgrey[20402]: cleaning main database finished. before: 152087, after: 61257 Aug 30 04:00:25 localhost postgrey[20402]: fatal: Can't call method "txn_commit" on an undefined value at /usr/sbin/postgrey line 223. I've a watchdog script kicking it back into life at the moment.