Re: No rfc1413 is good rfc1413

> I vote to have it off by default. It really isn't all that useful anyway.

I disagree on both counts.

The problem with 1413 is that its prime use (for email) is for the calling
site, rather than the called.
There is little use to me to determine the "user" sending email to my MTA
from outside my own domain, as its interpretation is unknown.
Its use to me is for email that originates within my domain -- to my own MTA
or others -- so that when there is a problem, I can work out what happened.
As such, please leave it on by default !