ARCHIVED: When trying to send email, why am I getting an SSL or SMTP error?

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Symantec AntiVirus Corporate Edition (SAV CE) 9 enables Internet Email Auto-Protect by default, which scans your outgoing email. This prevents Outlook from negotiating an SSL session with the SMTP server, which displays an SSL error. Examples of the errors, depending on the client, are listed below:

SAV CE 9:
"An encrypted email connection has been detected. Please see help for more information on how to transmit encrypted email."
You may have gotten this message once, which presents you with a dialog box with an option to not display the message in the future. If you chose this option, you will not see subsequent occurrences of this error, but will still not be able to send mail.
Outlook 2002 and later:
"Task 'imap2.indiana.edu - Sending' reported error (0x800CCC7D): 'Your outgoing (SMTP) server does not support SSL-secured connections. If SSL-secured connections have worked in the past, contact your server administrator or Internet service provider (ISP).'"
Outlook Express 6:
"Unable to establish a SSL connection with the server. Account: 'imap2.indiana.edu', Server: 'mail-relay.iu.edu', Protocol: SMTP, Server Response: '454 TLS not available due to temporary reason', Port: 25, Secure(SSL): Yes, Server Error: 454, Error Number: 0x800CCC7F"

To prevent this error, you must disable the Internet Email Auto-Protect feature. To do so:

From the Start menu, select Symantec Client Security, and then Symantec AntiVirus.
Click Configure, and then Internet Email Auto-Protect.
Uncheck Enable Internet Email Auto-Protect.

Your computer is still protected from viruses when you disable this feature. The File System Auto-Protect feature will still automatically scan email attachments whenever you access them. To ensure that File System Auto-Protect is providing real-time protection, after you disable the Internet Email Auto-Protect feature, do the following:

Make sure that File System Auto-Protect is enabled:
1. From the Start menu, select Symantec Client Security, and then Symantec AntiVirus.
2. Click Configure, and then click File System Auto-Protect.
3. Verify that Enable Auto-Protect is checked.
Run Live Update regularly to ensure that you have the latest virus definition files. For more information, see ARCHIVED: In Symantec/Norton AntiVirus for Windows, how do I schedule automatic LiveUpdates and virus scans?

For more information, see the following Symantec knowledge base articles:

  http://service1.symantec.com/SUPPORT/nav.nsf/docid/2001091807593406

  http://service1.symantec.com/SUPPORT/nav.nsf/8d071816eedd7cac88256c0e005a96e5/0e90958894384b6288256e9a00710588

Note: It is also possible to fix this problem by changing the outgoing mail server port to 587 in the email client and in SAV 9.0.