I cannot deliver mail to a particular mail server because it gets the STARTTLS command and claims that it cannot "initialize security subsystem". I'm curious: How does courier determine whether or not it should try to use TLS when communicating with a particular host?

The delivery status message that I receive in return is included. The names and addresses have been deleted to protect the innocent ;)

---------- Forwarded message ---------- Date: Mon, 09 Oct 2000 12:28:50 -0700 From: Courier mail server at ascension.dragonsdawn.net <@> To: yiny...@eburg.com Subject: NOTICE: mail delivery status.

This is a delivery status notification from ascension.dragonsdawn.net, running the Courier mail server, version 0.27.

The original message was received on Mon, 09 Oct 2000 12:28:47 -0700 from localhost (localhost [127.0.0.1])

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UNDELIVERABLE MAIL

Your message to the following recipients cannot be delivered:

<serv...@xxxxxx.com>: mail.xxxxxx.com [xxx.xxx.xxx.xxx]:

<<< 554 Unable to initialize security subsystem

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If your message was also sent to additional recipients, their delivery status is not included in this report. You may or may not receive other delivery status notifications for additional recipients.

The original message follows as a separate attachment.