Hi,
Last week I posted an initial version of this message through SecurePoint (one of the
qmail list archives). However the post (nor any reply) doesn't appear in the main
archive. So I suppose that it's lost. Excuseme if you have received it previously.
Qmail use the address #@[] as the envelope sender address for double bounces. The
messages with this
sender address are rejected by Microsoft Exchange IMS with this error (from qmail
logs):
Connected_to_NNN.NNN.NNN.NNN_but_sender_was_rejected.
/Remote_host_said:_553_malformed_address:_<#@[]>/
I have read the RFC821 (SMTP) and it seems to me that this address is ilegal. I quote
an excerpt from the
address syntax (in BNF notation):
<mailbox> ::= <local-part> "@" <domain>
<domain> ::= <element> | <element> "." <domain>
<element> ::= <name> | "#" <number> | "[" <dotnum> "]"
<dotnum> ::= <snum> "." <snum> "." <snum> "." <snum>
<snum> ::= one, two, or three digits representing a
decimal integer value in the range 0
through 255
So I think that between square brackets MUST be a IP address and null string is
invalid. Is it correct?
Since double bounces are "internal" notifications (from MTA to mail manager), should I
change the sender address for double bounces in source code? Is there another
recommended address for this use? Could I use the empty address as with simple
bounces?
Furthermore I tried another solution. I forward double bounces but changing the
envelope sender with this .qmail file:
| qmail-inject -f"<>" postmaster@exchange-server
However, if this forwarding fails, this configuration could produce a mail loop. Any
suggestions?
Thanks in advance for your help,
David Jorrin.
PD: I will be grateful if you would send me a copy of your replies to my address.
= = =
David Jorrin <[EMAIL PROTECTED]>>
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