Mauro Sanna wrote:
Not really. an OK in smtpd_sender_restrictions does not skip
smtpd_recipient_restrictions. In particular, it doesn't make you an open
relay.
If it doesn't skip so why not put directly in
smtpd_recipient_restrictions?
this is an anti-question. if you put it under
smtpd_recipient_restrictions and the check has an OK (something that may
happen one day or another), then it will skip other checks. which is not
what you want. so you don't put it there.
In your case, you want to reject invalid senders. someday, you may want
to change this to allow for few exceptions. if you put this under
smtpd_sender_restrictions, you can simply use "OK". if you put this
under smtpd_recipient_restrictions, you can't (you don't want to skip
other checks) so you can only use DUNNO which is less flexible (dunno
will not skip the following checks, even in a single restriction class).
