If everything is working, but you can't see the incoming emails, check if the ~otrs/bin/PostMaster.pl program is working correctly. Pipe an example email through the PorstMaster.pl. There are two example emails in the default OTRS package (~otrs/doc/test-email-*.box or /usr/share/doc/packages/otrs/test-email-*.box).
Example:
shell:~ # cat /usr/share/doc/packages/otrs/test-email-1.box | /opt/OpenTRS/bin/PostMaster.pl shell:~ # |
I lost the root password of OTRS ("Login failed! Your username or password was entered incorrectly.").
Reset of the OTRS root password:
shell:~ # mysql -u root -p otrs mysql> UPDATE system_user SET pw='roK20XGbWEsSM' where login='root@localhost'; mysql> |