SMTP auth stopped working after running an update, how do I fix it?

[Rob Swan]

It is possible that the update has changed something in the saslauthd configuration.

It can be fixed by running the SMTP auth (post EHCP force install) fixing script again using this command in PuTTY.

sudo bash smtpauthfixv2.sh

The above assumes you did not delete the script from your system, if you did, please refer to THIS POST for instructions on how to download it again.