Getting rejection message "TLS handshake failed" after sending e-mails.

Solution Unverified - Updated -


  • Mail is getting rejected to a specific domain.

    Sep 18 17:47:45 XX sendmail[4025]: ruleset=tls_server, arg1=SOFTWARE,, reject=403 4.7.0 TLS handshake failed.  
    Sep 18 17:47:45 XX sendmail[4025]: p8F8QUlr004450: to=<>, delay=3+00:21:15, xdelay=00:29:09, mailer=esmtp, pri=10833627, [xx.xx.xx.xx], dsn=4.0.0,  stat=Deferred: 403 4.7.0 TLS handshake failed.


  • Red Hat Enterprise Linux 3
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Sendmail

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content