Mailing List Message #102984
From: Tom Rymes <>
Subject: 403 4.7.0 TLS handshake failed
Date: Mon, 13 Feb 2012 15:41:35 -0500
To: CommuniGate Pro Discussions <>
Outside senders are receiving this error when sending mail to us. This issue has appeared multiple times since 5.4 was released, but I still have a few questions:

1.) This message points to a recommendation to change the startup script to include 'SUPPLPARAMS="--TLSServerHelloExtensions NO"':

How is this done on a Windows install?

2.) This is from a large Exchange install. Is there a software update that the senders can apply to the exchange server to fix this? Presumably this has been fixed and they have not applied the update? If so, I will point them to it.

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