> Hi All.
>
> Postfix rejects emails to addresses in MAIL FROM/RCPT TO that start
> with "-", for example:
> -t...@domain.tld<mailto:-t...@domain.tld>
> --ot...@domain.tld<mailto:--ot...@domain.tld>
> In log we have "warning: Illegal address syntax from ..... in RCPT command".
This is a safety feature that prevents security holes when email
addresses are passed on UNIX command lines.
This feature is enabled by default (allow_min_user = no), meaning
that 99.99...% of all Postfix sites will not accept such addresses.
My advice is to not use such email addresses.
Wietse
