Mail header to disable bounce emails-CodePudding

I am sending emails for newsletter subscription, where I get a lot of spam by bots.

Now I would like to send the opt-in email for the newsletter in a way that the mail server does not return any bounces to me.

I know I can set Return-Path to an unused mail account, but how to tell the mail server not to send any bounces? Any way I can set it to void?

I looked at RFC 5321 but I did not find anything for my case. Return-Path is defined as:

Return-path-line  = "Return-Path:" FWS Reverse-path <CRLF>

FWS is defined in RFC 5322:

FWS             =   ([*WSP CRLF] 1*WSP) /  obs-FWS
                   ; Folding white space

Or is there any other header for this?

CodePudding user response：

You need to set the envelope from, in sendmail that is the -f parameter:

   -f sender
          Set  the  envelope sender address. This is the address where de‐
          livery problems are sent to. With Postfix versions  before  2.1,
          the  Errors-To:  message  header  overrides the error return ad‐
          dress.

I still would suggest to use a valid mail address and just discard the mail. Not sure if it would cause trouble for example with SPAM reputation if you use @example.com or @example.invalid

CodePudding user response：

Return-Path is set by the mail server you send the mail to. As a sender you can not (or should not) set it yourself. But you can set From and Reply-To to [email protected] because example.com is a reserved domain.

That should do the trick.