Hi Viktor,
On 2024-01-02 18:13:22 +0100, Viktor Dukhovni via Postfix-users wrote:
That said, indeed the documentation is not explicit on this point, one
has to read "between the lines". If your technical writing skills are
adequate, perhaps you could suggest some concise and clear text
explaining the semantics.
This would need to be added to smtp(8), transport(5) and postconf(5),
with multiple affected parameters in the last case.
here are my suggestions (I hope I provided enough existing context to
make it clear where to insert the new text):
smtp(8):
------------------------------------------------------------------------
The Postfix SMTP+LMTP client supports multiple destinations separated
by comma or whitespace (Postfix 3.5 and later). Delivery is tried in the
specified order. For each individual destination the delivery rules of
RFC 5321, Section 5.1 are applied.
------------------------------------------------------------------------
transport(5):
------------------------------------------------------------------------
This tries to deliver to bar.example (following the rules of RFC 5321,
Section 5.1) before trying to deliver to foo.example.
------------------------------------------------------------------------
postconf(5):
------------------------------------------------------------------------
Multiple destinations are supported in Postfix 3.5 and later. In this
case delivery is tried in the specified order. For each individual
destination the rules of RFC 5321, Section 5.1 are applied.
------------------------------------------------------------------------
What I do not like about the above suggestions is the fact that the MX
lookup part of RFC 5321 is skipped if the [] notation is used. Thus
strictly speaking the rules of RFC 5321 are only partially followed in
that case. But since the user explicitly requested Postfix to skip MX
lookup in those cases, I hope that the above additions introduce more
clarity than confusion.
Of course it would be even better to explain the algorithm described in
RFC 5321 with a few words directly in the Postfix documentation rather
than refer to the RFC, but this would be really tough to achieve.
Best regards,
Peter
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