Ok, now it's starting to be much clear.
Really appreciate your help and time!


2016-10-14 11:45 GMT+01:00 Wietse Venema <wie...@porcupine.org>:

> Pawe? Grzesik:
> > It's of course not a production code. I'm only trying to
> > learn and understand how exactly it works.
> >
> > I cannot find anything about "--" in the postfix documentation
> > (or I'm looking on the wrong page?). There is any explanation
> > somewhere? (instead of at the source code).
> Look at "man getopt" the, i.e. the SYSTEM LIBRARY function that
> parses command-line options. Without the '--' before the recipients,
> a recipient address starting with '-' would change the way that the
> sendmail command works.
>         Wietse

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