After upgrading to 10.7.4 the MTA is not started and starting the MTA through the GUI or CLI is not working.
When trying to start the MTA, the logs show errors similar to:
2020 Dec 21 18:47:04 -05 (err) ecelerity:  Failed to initialize MTE: 46041
2020 Dec 21 18:47:04 -05 (err) ecelerity:  Module 'sms_integration' instance 'sms_integration' post-init failed. Consult your vendor.
2020 Dec 21 18:47:04 -05 (err) runner:  Job mta process 31714 exited, with exit status 255 (0xFF00).
Release : 10.7.4
Component : MTA
This issue is resolved by applying patch 10.7.4-285 as follows:
smg [10.7.4-13]> patch list ... sms-appliance-patch.x86_64 10.7.4-285 symrepo_smg_patches
smg [10.7.4-13]> patch -p 10.7.4-285 install
If the patch cannot be immediately installed, a workaround is to change the System Locale from Espanol to English.
In the control center, go to (Administration > Control Center > Locale) and change the System Locale from Espanol to English.
This issue will be fixed in a later release. This document will be updated when the fix is available.