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  3. Cannot bind to port 25 with the Snapt Aria Load Balancer (sendmail)

Cannot bind to port 25 with the Snapt Aria Load Balancer (sendmail)

Snapt Aria images (depending on configuration) may have the sendmail daemon running on port 25 on localhost. This can cause issues when your load balancer group or Frontend is bound to 0.0.0.0:25 and there are two options


Option 1: Specify the IP to listen on

You may want to set an IP for your load balancer group when adding it, instead of saying ‘Any’. This will prevent the clash on localhost port 25.

Option 2: Disable sendmail completely

You can run the following commands to ensure it does not start at boot

service sendmail stop
systemctl stop sendmail
chmod 000 /usr/sbin/sendmail
Updated on March 19, 2020


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