SMTP Authentication on postfix smtp client is enabled when you configure the smtp server without specifying smtp credentials in alert configuration.

Problem

Starting with 2.6.1.1, NetBackup Appliance changes the settings on postfix smtp client while configuring the smtp settings in alert configuration.
For more information about this behavior, please see the 'Configuring SMTP' page in the NetBackup Appliance Administrator's Guide.

SMTP Authentication on postfix smtp client is enabled when you configure the smtp server without specifying smtp credentials in alert configuration.
This may cause email notification problem for backups and vault report email. Receiving an email for hardware and software alerts also works normally.

Error Message

If you encounter email notification problem, please check /var/log/maillog.

The following similar messages can be seen in maillog.

Solution

To disable SMTP Authentication on postfix smtp client, you need to do the following steps.

1. Run the elevate command via the CLISH (Support > Maintenance > elevate).
2. Check 'smtp_sasl_auth_enable=yes' in /etc/postfix/main.cf.
3. Change setting back to 'smtp_sasl_auth_enable=no'.
4. Run 'service postfix restart' command.

Note: SMTP Authentication on postfix smtp client will be re-enabled every time that click save in alert configuration page from the NetBackup Appliance Web Console.