Domino and Postfix

Hey Guys,

Was wondering if I could some opinions on this, and maybe some
supporting data. My postfix server currently has a
smtpd_hard_error_limit set to 5, a Domino SMTP server is sending
invalid addresses to my Postfix server, eg:' "cc"<test@test.com>' for
the first five invalid addresses my postfix server returns a '501 bad
syntax' error, but after the fifth error, Postfix gives a 421 error and
kills the connection.

Because the connection is dropped, Domino tries to resend the message,
and the same thing happens again this just keeps looping.

If I raise my smtpd_hard_error_limit I can work around the problem, but
my feeling is that when I send Domino the '501 bad syntax' error, it
should then drop this recipient from the mail, and the next time it
tries to connect again, it shouldn't attempt to deliver the message to
this synctactically incorrect recipient. Even if the message fails to
send the next couple of times after this, eventually the message should
be sent once all these bad addresses are removed.

Is my thinking correct, or does anyone else have any views on this??

Anyone have any views on this??

Cheers,