Bug#929798: exim4-base: /etc/cron.daily/exim4-base will not rotate paniclog if it is 100% noise.

[Andreas Metzler]

On 2019-05-31 Kev Green <kyrian at ore.org> wrote:
> Package: exim4-base
> Version: 4.84.2-2+deb*
> Severity: normal
[...]
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?

> Doing $E4BCD_PANICLOG_NOISE to begin with was one mitigation, but it
> does not respect the 'once' mode of $E4BCD_WATCH_PANICLOG so warning
> emails keep coming until manual intervention is done.


I do not get this part of the bug-report. Afaict from looking at the
script the following happens (in pseudocode):

1. Check for nonempty paniclog.
2. If E4BCD_PANICLOG_NOISE is not set or if paniclog contains lines NOT
ignored by E4BCD_PANICLOG_NOISE then
  a) send out a warning mail
  b) rotate log if "$E4BCD_WATCH_PANICLOG"="once"

So if paniclog is non-empty, but only contains ignored lines then the
log is not-rotated but warning mails are not sent out. So "warning
emails keep coming" will not happen.

cu Andreas