On Thu, 02 Feb 2012 23:49:19 +0200
Nikolaos Milas <nmi...@noa.gr> wrote:

> Hello,
> 
> In the logs, there are cases where some message seems to be coming
> from=<>.

That's because they are.

> 
[snip]
> 
> In such cases PFLOGSUMM, instead of a domain name or full sender 
> address, displays in the stats "from=<>".

That's because the sender is the null sender.  So it was either
display nothing at all, or show "from=<>" to make it clear those were
from the null sender.

> 
[snip]
> 
> Is it intended behavior?
[snip]

Yes.

Regards,
Jim
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