On 2/2/2013 at 9:52 AM Sahil Tandon wrote: |On Wed, 2013-01-30 at 14:23:19 -0500, Mike. wrote: | |> I made some changes to the script based upon the excellent feedback I |> received here. |> |> The script no longer wanders beyond the postscreen log records in |> order to gather the information needed to determine the postscreen |> rejection rate. So that removes the problems caused by |> multiple-recipient messages. |> ... | |Be careful with grep(1) patterns. You overstate CONNECTs by including |'NOQUEUE: reject: CONNECT' in the count. Meanwhile, the script |understates total DNSBL rejections, which you measure with: | || grep -c "DNSBL rank [3-99]" | |That bracket expression matches on a _single_ character, and does not |capture double-digit ranks. A similar mistake occurs in the attempt to |aggregate 9+ ranks: | || grep -c "DNSBL rank [9-99] " | |This only counts appearances of "DNSBL rank 9" in the log, as |illustrated below: | || % grep -c "DNSBL rank [9-99] " maillog || 4494 | || % grep -c "DNSBL rank 9 " maillog || 4494 | |Review the re_format(7) and grep(1) manuals to improve understanding of |regular expressions. In case it helps you, last year I had cobbled |together a slower (it is Python rather than a set of grep(1) |expressions) script[1] to collect similar statistics. No promises that |it is error-free. | |[1] http://people.freebsd.org/~sahil/scripts/mailstats.py.txt | |-- |Sahil Tandon
============= Thanks for the feedback.
