Fallback to plaintext delivery might not work in some situations where opportunistic TLS fails

Products

• Messaging Gateway

Issue/Introduction

When configured to use opportunistic TLS, Messaging Gateway (SMG) will attempt to fall back to plaintext delivery when the TLS communication attempt fails. In some cases, this fallback to plaintext delivery is not occurring which can result in messages getting "stuck" in the delivery queue.

 

451 4.4.2 [internal] send helo/ehlo failed

Environment

Messaging Gateway 10.5
Messaging Gateway 10.6

Resolution

This issue has been addressed with the Messaging Gateway 10.6.2 release.

Please see the Messaging Gateway Administration Guide for detailed instructions on how to update the SMG software.