schmonz.com is a Fediverse instance that uses the ActivityPub protocol. In other words, users at this host can communicate with people that use software like Mastodon, Pleroma, Friendica, etc. all around the world.

This server runs the snac software and there is no automatic sign-up process.

Search results for tag #DevOps

[?]Jan Schaumann »
@jschauma@mstdn.social

System Administration

Week 8, The Simple Mail Transfer Protocol, Part II

In this video, we observe the incoming mail on our MTA, look at how STARTTLS can help protect information in transit, how MTA-STS can help defeat a MitM performing a STARTTLS-stripping attack, and how DANE can be used to verify the authenticity of the mail server's certificate.

youtu.be/RgEiAOKv640

    [?]Jan Schaumann »
    @jschauma@mstdn.social

    System Administration

    Week 8, The Simple Mail Transfer Protocol, Part III

    In this video, we look at ways to combat Spam. In the process, we learn about email headers, the Sender Policy Framework (), DomainKeys Identified Mail (), and Domain-based Message Authentication, Reporting and Conformance (). doesn't seem quite so simple any more...

    youtu.be/KwCmv3GHGfc

      about this site - powered by snac