Raymond Neeves wrote:
"...to accept mail to domain literals..."
to me that appears to be about mailservers accepting RCPTs of
username(_at_)[ipaddress] (accept mail to) and not about FROMs (accept
mail from) ???
are there *any* valid circumstances for the FROM to be
username(_at_)[ipaddress] ? RCPT i can understand but FROM?
I think you are missing the point. Section 2.1 ("The Mail From Identity")
says:
When the reverse-path is null, this document defines the
"Mail From" identity to be the mailbox composed of the localpart
"postmaster" and the domain supplied with the SMTP EHLO or HELO
command.
And Section 3.6 of RFC 2821 states:
The domain name given in the EHLO command MUST be either a primary
host name (a domain name that resolves to an A RR) or, if the host
has no name, an address literal as described in section 4.1.1.1.
So that the matter of domain literals in MAIL FROM is pertinent.
- Mark
System Administrator Asarian-host.org
---
"If you were supposed to understand it,
we wouldn't call it code." - FedEx