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MAILCONTLS - Secure Connection (SSL/TLS) Failure

Fix this error by matching the security type and port in ServiceOps to what your mail server requires.

MAILCONTLS appears when the SSL/TLS handshake between ServiceOps and the mail server fails. This usually means the Security Type or Port in the configuration doesn't match what the server expects. Use this page to correct the security settings and restore a secure connection.

Error CodeMAILCONTLS
Error MessageSecure connection to the mail server failed. Check the security type and security certificate.
SeverityHigh
AffectsIncoming and Outgoing Email Servers

Symptoms​

Look for these signs to confirm this error is active.

  • The connection attempt fails during the SSL/TLS handshake stage.
  • Test Connection returns a certificate or secure-connection failure.

Root Cause​

One of these conditions caused the TLS handshake to fail.

  • The Security Type or Port doesn't match what the mail server requires.
  • The mail server has an expired or untrusted SSL certificate.

Resolution​

Follow these steps to correct the security settings and restore the connection.

  1. Navigate to Admin > Support Channel > Emails and open the affected server.
  2. Verify the Security Type and Port are correct for your mail provider. Most providers require SSL or TLS. Confirm which one your provider expects.
  3. If you're using an internal company mail server, verify that the security certificate is valid and not expired.
Related FAQs

See Email Server FAQs for: "Why is the incoming email server not fetching any emails?" and "Why are all outgoing emails failing with a connection error?"