> -----Original Message-----
> From: [EMAIL PROTECTED]
[mailto:squirrelmail-
> [EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
> Sent: Friday, April 14, 2006 11:22 AM
> To: [EMAIL PROTECTED]
> Cc: [email protected]
> Subject: Re: [SM-USERS] mail from empty when sending read receipt
> 
> >> Hi.
> >>
> >> I'm using squirrel mail 1.4.6 under debian etch.
> >>
> >> My mailserver refuses empty mail from's. Squirrel seems to send
empty
> >> mail from's when answering read receipts. Can that be turned off so
> that
> >> it uses the current email address of the user? Basically it must
work,
> >> because when sending an email, it uses the right address as sender.
> >>
> >> Any hints?
> >
> > Your mail server is violating RFC.
> > Any "bad mail from" or receipt message uses "<>" as "mail from".
> > This means these messages must not be replied (think about
> autoresponders).
> 
> I don't want to start a discussion about rfc compliance vs. stopping
spam.
> My question is still unanswered. Is there such an option or not?

Your answer is no. RFC compliance is why the Internet works. Period. SM
is RFC compliant. Your mail server is not and is therefore broken. DSN
notifications are sent with a null sender to prevent mail loops. If
you're not following the rules you can't expect others to change to fix
your problems.

http://www.faqs.org/rfcs/rfc1891.html

7.1 SMTP Envelope to be used with delivery status notifications

   The DSN sender address (in the SMTP MAIL command) MUST be a null
   reverse-path ("<>"), as required by section 5.3.3 of [9].  The DSN
   recipient address (in the RCPT command) is copied from the MAIL
   command which accompanied the message for which the DSN is being
   issued.  When transmitting a DSN via SMTP, the RET parameter MUST NOT
   be used.  The NOTIFY parameter MAY be used, but its value MUST be
   NEVER.  The ENVID parameter (with a newly generated envelope-id)
   and/or ORCPT parameter MAY be used.

--
Marc


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