I have tried to create a user - admin at OTRS system (localhost) installed this way "Nice tutorial. Thanks!". But I met the DNS problem, while the email was verified. How do I solve it?
To solve this issue I went to
/opt/otrs/Kernel/System
There you can find the file CheckItem.pm implement:
sudo nano CheckItem.pm
There I have modified the CheckEmail subroutine:
sub CheckEmail {
return 1;
...
}
Apparently you either can't resolve domains OR the email address you try to type in does not have a valid MX record on the DNS server your OTRS system uses.
You can change the DNS server by setting CheckMXRecord::Nameserver
under Admin > SysConfig > Framework > Core
to a valid nameserver.
Alternatively you can set CheckMXRecord
to 'No' under Admin > SysConfig > Framework > Core
if you do not want DNS lookup validation at all.