If you receive complaints from people sending mail to you with the following error "retry time not reached for any host after a long failure period", it is likely due to an error with the server sending mail at their end. The Exim Retry Database has likely become corrupt and would need to be fixed before they could retry sending mail to your email address/domain.

T=remote_smtp: retry time not reached for any host after a long failure period

The following are the solutions to the above problem:

Login to Direct Admin server via SSH and execute the following commands:

cd /var/spool/exim/db
rm -f retry retry.lockfile
rm -f wait-remote_smtp wait-remote_smtp.lockfile
service exim restart
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