On Fri, 19 Jun 2020 10:04:09 +0100 Jeremy Harris via Exim-users wrote:
> On 19/06/2020 09:48, Frank Elsner via Exim-users wrote:
> > Ok, it is not a repro of the initial case.
> > But it is not nomal as it delays the massege.
> > 
> > But can you explain this please
> > 
> >         22937 tick check: 1592491915.156500 1592491548.933500
> >         22937 waiting 366.223500 sec
> 
> Exim uses the system time as part of generating unique identifiers.
> To do that it waits, if needed, for the granularity of the time
> it is using for that purpose.  That should be something in the
> millisecond range.  To end up having to wait for six minutes
> suggests that your system time jumped backwards by that much.
> 
> Exim is not designed to work in that environment. It assumes that
> time only goes forwards, and that it does move.  If you are
> deliberately changing the system time backwards I suggest that
> at the very least you need to stop Exim first and restart after.
> Even doing that could result in unintended behaviour for the
> doubly-covered apparent period.

Many thanks for the explanation.

Have a nice weekend,
Frank

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