[stunnel-users] Loss of ability to use Stunnel-Blat, and a solution

Flo Rance trourance at gmail.com
Tue Jul 10 09:15:39 CEST 2018


Click on your avatar, then Google Account, then Sign-In & Security. At the
bottom of the page, there's "Allow less secure apps".

You can't choose which app is a less secure app, because this option may be
understood as "re-enabling Basic Authentication" which means "plain-text
password authentication".

By default, Gmail only allows Oauth authentication.


On Mon, Jul 9, 2018 at 7:55 PM, Roger Bohl <rhbohl at gmail.com> wrote:

> Early in 2018, around the time when I upgraded my system to Windows 10,
> the Stunnel and Blat files that had worked fine with my Vista PC would not
> work with the new PC.  However, the "bug" turned out to be unrelated to the
> change in operating systems, but rather an "upgrade" to Gmail:
> Coincidentally, about that time, Gmail evidently decided to stop accepting
> e-mails from apps deemed "a less secure app", including Stunnel-Blat, with
> Blat then displaying messages:
> *** Warning ***  The SMTP server did not accept Auth PLAIN value.
> *** Warning ***  Are your login userid and password correct?
> *** Warning ***  The SMTP server did not accept Auth LOGIN PASSWD value.
> Only a failure message sent to my "backup e-mail address" led me to
> explore this as a possible cause for what I had thought was, but turned out
> not to be, a Stunnel-Blat problem.  Gmail has an option to suppress this
> heightened security feature, and when I activated this option, my
> Stunnel-Blat tools immediately began to function as intended.
> While I was at first able to enable Gmail to "Allow access from "less
> secure accounts," I have been unable to get through Gmail options
> consistently to turn this on and off and share this info with others.  (I
> would welcome instructions that work consistently.)
> I would also welcome guidance on how to include Stunnel-Blat as a specific
> alllowed app, without having to enable Gmail to enable *all* "less secure
> apps"
> Roger Bohl
> _______________________________________________
> stunnel-users mailing list
> stunnel-users at stunnel.org
> https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
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