Dear exim users/developers,
I upgraded exim from 4.69 to 4.73 a few weeks ago due to the vulnerability described in "
http://www.exim.org/lurker/message/20101210.164935.385e04d0.en.html"
Since then, I notice that my system struggles to keep up with the volume of email that it had little problem handling in 4.69
Has anyone else seen a similar behaviour ?
The pertinent config settings are:
received_headers_max = 40
message_size_limit = 20M
recipients_max = 1000
queue_only = yes
queue_run_max = 250
remote_max_parallel = 50
connection_max_messages = 750
system info:
Linux 2.6.18-194.26.1.el5 #1 SMP
dual quad E5540 @ 2.53GHz (16 logical cores)
16GB RAM
typical daily stats for 4.73:
Grand total summary
-------------------
At least one address
TOTAL Volume Messages Addresses Hosts Delayed Failed
Received 87GB 905747 99 6693 0.7% 0 0.0%
Delivered 110GB 1535583 1539352 14
Rejects 430 12
Temp Rejects 3284 27
Time spent on the queue: all messages
-------------------------------------
Under 1m 23750 3.1% 3.1%
5m 47952 6.2% 9.3%
15m 43763 5.7% 15.0%
30m 44933 5.8% 20.8%
1h 86275 11.2% 32.0%
3h 240461 31.2% 63.3% *****only 63% after 3h****
6h 181135 23.5% 86.8%
12h 89728 11.7% 98.5%
1d 6163 0.8% 99.3%
Over 1d 5551 0.7% 100.0%
Time spent on the queue: messages with at least one remote delivery
-------------------------------------------------------------------
Under 1m 23750 3.1% 3.1%
5m 47952 6.2% 9.3%
15m 43763 5.7% 15.0%
30m 44933 5.8% 20.8%
1h 86275 11.2% 32.0%
3h 240461 31.2% 63.3%
6h 181133 23.5% 86.8%
12h 89728 11.7% 98.5%
1d 6161 0.8% 99.3%
Over 1d 5551 0.7% 100.0%
typical daily stats for exim-4.69-4
Grand total summary
-------------------
At least one address
TOTAL Volume Messages Addresses Hosts Delayed Failed
Received 80GB 789440 98 53523 6.8% 0 0.0%
Delivered 159GB 1572696 1582306 11
Rejects 950 3
Temp Rejects 10250 16
Time spent on the queue: all messages
-------------------------------------
Under 1m 237858 30.2% 30.2%
5m 149936 19.0% 49.2%
15m 148053 18.8% 68.0%
30m 112415 14.3% 82.3%
1h 95188 12.1% 94.3%
3h 44596 5.7% 100.0% *****100% after 3h****
6h 2 0.0% 100.0%
Time spent on the queue: messages with at least one remote delivery
-------------------------------------------------------------------
Under 1m 237858 30.2% 30.2%
5m 149936 19.0% 49.2%
15m 148053 18.8% 68.0%
30m 112415 14.3% 82.3%
1h 95188 12.1% 94.3%
3h 44596 5.7% 100.0%
6h 2 0.0% 100.0%
Thank you in advance for anyone who takes the time to look at this.
Cau Ba
