I’ve been meaning to get some proper stats setup for my mail server, but until then, I’ve been mostly content with reading the LogWatch reports from my server. It has been dutifully analyzing my log files, and giving me all kinds of useful data, such as the mail stats from Saturday, 18th July…
The first interesting stat is for my tiny little mail server, I received 27,668 emails. Of that 27,242 of them were dropped at the door. 20k of which were RBLs. Of the handful that were left behind, half of them were marked as spam by Amavis and SpamAssassin.
Here are the full details…
--------------------- Postfix Begin ------------------------
4 SASL authentication failed
48.003M Bytes accepted 50,334,433
77.976M Bytes sent via SMTP 81,763,280
8.110M Bytes delivered 8,503,744
======== ================================================
426 Accepted 1.54%
27242 Rejected 98.46%
-------- ------------------------------------------------
27668 Total 100.00%
======== ================================================
504 5xx Reject relay denied 1.85%
42 5xx Reject HELO/EHLO 0.15%
4239 5xx Reject unknown user 15.56%
1914 5xx Reject recipient address 7.03%
20543 5xx Reject RBL 75.41%
-------- ------------------------------------------------
27242 Total 5xx Rejects 100.00%
======== ================================================
1097 4xx Reject recipient address 100.00%
-------- ------------------------------------------------
1097 Total 4xx Rejects 100.00%
======== ================================================
22593 Connections made
12936 Connections lost (inbound)
22592 Disconnections
422 Removed from queue
115 Delivered
333 Sent via SMTP
4 Resent
7536 Policyd-weight
2 Connection failure (outbound)
184 Timeout (inbound)
28 Illegal address syntax in SMTP command
4 Numeric hostname
14 SMTP dialog error
28 Excessive errors in SMTP dialog
3484 Hostname verification errors
4 Hostname validation errors
7 SASL authenticated messages
---------------------- Postfix End -------------------------
This reminds me of a need to setup more monitoring and statistics. For example, per domain logs for the domain owners to review (and me to find out who uses my system the most).
I have some interesting ideas for my servers, just got to get around to doing them…