Plan 9 from Bell Labs’s /usr/web/sources/patch/applied/smtpd-dot-in-helo/readme

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


require a dot in helo/ehlo strings not coming from a trusted
(ournet) machine.  This lets broken microsoft mail clients
submit to the local smtp server, but stops a lot of spam.

Bell Labs OSI certified Powered by Plan 9

(Return to Plan 9 Home Page)

Copyright © 2021 Plan 9 Foundation. All Rights Reserved.
Comments to [email protected].