Re: RFC 821 - ReadList.com

15 msg	Header for message size?
3 msg	address rewriting
2 msg	address_verify_relayhost and relay_domains
5 msg	pflogsumm reports
11 msg	Changing Queue IDs
3 msg	another authentication failure( with sasl)
2 msg	Bypass Spam checks for certain destinations
11 msg	Postfix 'too nice' with content_filter
7 msg	profiling a milter (dkim in particular)
7 msg	spammers tacking on headers how to block?
7 msg	[Fwd: Re: RFC 821]
1 msg	Re:
4 msg	(No Subject)

RFC 821
\ S. Highlander (19 Sep 2007)
. \ (Wietse Venema) (19 Sep 2007)

7 msg	Suspending mail delievery to a specific user
2 msg	Re: OT - massive newsletter
12 msg	List management issue: possibly Off Topic
2 msg	bad protocol error Testing SASL configuration
2 msg	warning: smtpd_sasl_auth_enable is true, but SA...
1 msg	Quota Problem

Subject:	Re: RFC 821
Group:	Postfix-users
From:	(Wietse Venema)
Date:	19 Sep 2007

S. Highlander:
> Good Morning,
>
> Does Postfix send mail to other servers using strict rfc 821 envelopes
> by default or is there a setting to force this behavior?

Postfix is not a protocol sanitizer.

Postfix sends strict RFC compliant mail provided that it receives
RFC compliant mail.

Postfix will reject some manifestations of out-of-spec mail, and
it will fix some defects, but it is not going out of its way to
transform arbitrary garbage into clean nice-smelling data.

Wietse