DSN: Return receipt ??

Remco Barendse mailscanner at BARENDSE.TO
Wed Jul 2 18:35:05 IST 2003

This is great, this is what I've been looking for for a long time :) :)

Will this also block the read/not read messages?

The problem I had was that I'm using Exchange as the mail server, this
linux box is only relaying mail to/from the internet <-> exchange server.

Will the sendmail setting also work in this case where M$ Exchange is
gererating these annoying status messages that can't be disabled?

On Wed, 2 Jul 2003, Sebastian Wiesinger wrote:

> * Remco Barendse <mailscanner at BARENDSE.TO> [2003-07-02 16:15]:
> > In the maillog I noticed a remark about a DSN: Return receipt.
> >
> > What does the line from maillog mean? Any return receipt did not appear in
> > the mailbox for archived outgoing mail.
> If a user adds a "Return-Receipt-To: <mail at address>" header to his/her
> mail, sendmail will deliver an receipt upon successful delivery of the
> mail. You can deactivate this feature with the following option in
> your sendmail.mc:
> define(`confPRIVACY_FLAGS', `noreceipts')dnl
> >From the sendmail operation guide:
> #v+
> public         Allow open access
> needmailhelo   Insist on HELO or EHLO command before MAIL
> needexpnhelo   Insist on HELO or EHLO command before EXPN
> noexpn         Disallow EXPN entirely, implies noverb.
> needvrfyhelo   Insist on HELO or EHLO command before VRFY
> novrfy         Disallow VRFY entirely
> noetrn         Disallow ETRN entirely
> noverb         Disallow VERB entirely
> restrictmailq  Restrict mailq command
> restrictqrun   Restrict -q command line flag
> restrictexpand Restrict -bv and -v command line flags
> noreceipts     Don't return success DSNs20
> nobodyreturn   Don't return the body of a message with DSNs
> goaway         Disallow essentially all SMTP status queries
> authwarnings   Put X-Authentication-Warning: headers in messages
>                and log warnings
> #v-
> I prefer the following line:
> define(`confPRIVACY_FLAGS', `goaway,noreceipts,restrictqrun,restrictexpand')dnl
> > I use sendmail rules to discard read receipt messages but in this case
> > there is nothing in the maillog that this message or reply was discarded.
> I don't know what rules you use for discarding, but the configuration
> option above is the right way to deactivate the DSN2.x.x messages.
> For more info about the privacy options, see the sendmail installation
> and operation guide (op/op.txt.gz).
> --
> InterNetX GmbH
> Sebastian Wiesinger
> System Administration
> eMail: sw at internetx.de

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