[TriLUG] sendmail question -ONoRecipientAction=Add-To-Undisclosed

[Jon Carnes]

Here is a moronic question for you:
  Why don't you simply include a bogus or valid email address in the TO:
field... like all legitimate email does?

Whenever I've blasted out mass-mailings (code word for spam *from* my
company) I always put the From: address in the To: field as well, but
change the display name to "Undisclosed Recipients".  

NBD and the mail doesn't look radioactive to the end-user or to spam
filters.

Jon

On Fri, 2003-05-23 at 12:28, Jeremy Portzer wrote:
> Hello,
> 
> According to the documentation, enabling this option will add an
> "Undisclosed Recipients:;" header to email that doesn't have a To:
> field.  I need this behavior for sending out email with BCC recipients
> from an application.
> 
> However, it doesn't actually work.  Email continues to be sent out with
> no To: header at all (which tends to trigger spam filters).
> 
> I've put this in sendmail.mc, rebuilt sendmail.cf, and restarted the
> daemon:
> 	define(`confNO_RCPT_ACTION', `add-to-undisclosed')dnl
> 
> I've also tried running "/usr/sbin/sendmail -t
> -ONoRecipientAction=Add-To-Undisclosed" and feeding it mail with BCC
> headers.  It doesn't work... the special "To: Undisclosed Recipients:;"
> header NEVER gets added.
> 
> I've also tried just including the "To: Undisclosed Recipients:;" from
> my application.  I've also tried the syntax of "To:
> undisclosed-recipients:;" which seems to be sometimes used.  However,
> the mail then gets bounced with this error:
> 553 5.1.3 undisclosed-recipients:;... List:; syntax illegal for
> recipient addresses
> 
> I'm using sendmail-8.11.6-25.73 on Red Hat Linux 7.3.  Any ideas on how
> to get this option working?
> 
> This requirement is important enough to me that I'll switch to postfix
> if Postfix can do this properly.  Does anyone have experience with
> similar options in Postfix ?
> 
> Thanks!
> 
> Jeremy Portzer