Leon,

> I'm monitoring my system (Postfix+Cyrus+Amavisd-new: SA+ClamAV) with
> mailgraph, amavis-stats and pflogsumm (preprocessing logs before handing
> them to pflogsumm with prepflog.pl - http://web.tiscali.it/postfix/
> to get more accurate results). My findings are:

I don't have much experience with any of these, so I'll just try
to point out some possible discrepancies in counts obtained from
parsing log-level 0 amavisd log entries (having in mind 2.4.x
series), assuming the basic parsing is done well and that possible
higher-log-level log entries are not triggering false/multiple
counts.

- long log entries (somewhere over 1000 characters) are split into
  multiple log entries (showing "..." at glue points), which are
  possibly interleaved by log entries from other parallel child
  processes. Log analyzer must know how to glue fragments together
  before parsing them, correlating shown mail id and process id;
  wraps often occur when SA tests logging is enabled (macro %T
  is used in $log_templ);

- a message with multiple recipients may show as two log entries
  when action differs between recipients, e.g. if some are spam lovers
  or have high kill level (log will show 'Passed XXXX' for them),
  while other recipients may show 'Blocked XXXX' as an additional
  log entry for the same message;

- if by-recipient log entries are enabled ($log_recip_templ),
  these may look quite similar to by-message entries ($log_templ),
  so it is prudent to enable just one or the other, and make sure
  the log analyzer know it is seeing by-recip or by-message entries.

Mark

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