Why uw.edu not accepted my signed email?

[Andrew D. Arenson]

On Tue, Nov 16, 2021 at 07:29:01PM +0000, Claus Assmann wrote:

> On Tue, Nov 16, 2021, Andrew D. Arenson wrote:
> 
> > 	Deferred: 403 4.7.0 TLS handshake failed.
> 
> This has nothing to do with the content of the mail, it's a problem
> between the program you use to send (submit?) the mail at the SMTP
> level and the MTA at uw.edu.
> Do you use mutt directly for this or some MTA?
> Check whatever (START)TLS configuration you use for that.

  	Thanks!

  	I'm not sure I know enough to answer your question properly, but I will try.

	I'm running mutt on an Ubuntu OS workstation with sendmail installed. 

	I receive email using IMAP via a davmail process that in turn interacts with Indiana University's Office 365 Exchange instance.

	  set spoolfile="{aarenson\@iu.edu at localhost:1143}INBOX"

	I have the following in my .muttrc that I think were put in place to deal with issues in _receiving_ email, but perhaps have a role in sending email, too.

	  # For using TLS
	  set ssl_starttls=no
	  set ssl_force_tls=no

    	I don't see any obvious configurations that set how email is sent, so my guess is that it is being send via sendmail on my Ubuntu workstation.

	I have no record of configuring sendmail myself, and I kept fairly copious notes when building this workstation in March, so I assume sendmail has whatever is the stock configuration for its Ubuntu package.


Andy


-- 
Andrew D. Arenson (he/him)                              H 317.964.0493
arenson (at) spatzel.net                                C 317.679.4669