Email alerts for alarms are not delivered on vCenter Server Appliance 6.5

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VMware vCenter Server

This article provides steps to replace the config_sendmail.sh script that has compatibility issues with vCenter Server Appliance 6.5.

Symptoms:

Configuring Mail Server in the web client completes without error.
In the /var/log/vmware/vmware-vpx/vpxd.log file, there are entries similar to:

Cannot set SMTP relay server:Error code configuring sendmail: 2
Running the mailq command on the vCenter Server Appliance displays pending emails.

This issue occurs due to compatibility issues with the config_sendmail.sh in vCenter Server Appliance 6.5.

This issue is resolved in VMware vCenter Server Appliance 6.5 b, available at VMware Downloads.

Note: By design from vSphere 6.0 , vCenter Server prefers DNS record before it uses its internal mail server entry.

To work around this issue, replace the config_sendmail.sh file on the vCenter Server Appliance.

Download the 2148396_config_sendmail.zip file attached to this Knowledge Base article.
Extract the config_sendmail.sh file from the 2148396_config_sendmail.zipfile and transfer it to the /tmp/ folder of vCenter Server Appliance using WinSCP/SCP.
Log in to vCenter Server Appliance console or connect with SSH as root.
Type shell and press Enter.
Backup the /usr/lib/vmware-vpx/config_sendmail.sh file with this command:

mv /usr/lib/vmware-vpx/config_sendmail.sh /usr/lib/vmware-vpx/config_sendmail.sh.old
Move the config_sendmail.sh script to /usr/lib/vmware-vpx folder with this command.

mv /tmp/config_sendmail.sh /usr/lib/vmware-vpx/
Run this command to make the file executable:

chmod a+x /usr/lib/vmware-vpx/config_sendmail.sh
Configure the Mail Sender settings. For more information, see the Configure Mail Sender Settings section of the vCenter Server and Host Management guide.

2148396_config_sendmail.zip get_app

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