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“Unable to log on. The connection to the server was unsuccessful…” appears when logging in to the End-User Quarantine (EUQ) console of InterScan Messaging Security Virtual Appliance (IMSVA)

    • Updated:
    • 22 Oct 2015
    • Product/Version:
    • InterScan Messaging Security Virtual Appliance 8.2
    • InterScan Messaging Security Virtual Appliance 8.5
    • InterScan Messaging Security Virtual Appliance 9.0
    • Platform:
    • N/A N/A
Summary

After entering your username and password on the EUQ console, you get the following message:

“Unable to log on. The connection to the server was unsuccessful. Please contact your administrator.”

EUQ console

Details
Public
 
IMSVA 8.5 supports only SMTP servers that use the Plain and Login authentication mechanisms.

The problem occurs when you use the SMTP Server for EUQ Authentication option when logging in to the EUQ console." This is found under IMSVA Console > Administration > End-User Quarantine > EUQ Management > Enable EUQ Feature.

To resolve the issue, check if "AUTH PLAIN LOGIN" is present on the commands list:

  1. Select a managed domain.
  2. Telnet to the managed domain on port 25.

    Telnet to the managed domain

  3. Enter the command “EHLO trend.com”.

    EHLO trend.com

  4. Check if "AUTH PLAIN LOGIN" is on the list.

    For the SMTP Authentication to work, "AUTH PLAIN LOGIN" should be on the available commands list.

    AUTH PLAIN LOGIN

  5. If not present, contact your mail server administrator to add “AUTH PLAIN LOGIN” to the list.
Premium
Internal
Rating:
Category:
Troubleshoot
Solution Id:
1103950
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