I have received PM, thank you.
Assuming there's no mistyping, additional white chars and this like that, what Paul wrote must be the cause of the problem.
I doubt gmail.com doesn't have proper MX record, so there must be something on your server configuration that doesn't allow validation of MX record.
To turn off that feature in epesi, open file
/modules/FirstRun/FirstRun_0.php
Find line 69:
$f->addRule('mail', $this->t('This isn\'t valid e-mail address'), 'email',true);
and replace it with
$f->addRule('mail', $this->t('This isn\'t valid e-mail address'), 'email');
(i.e. remove that last argument -
true)
Hope this helps.
By the way - could you please tell us what hosting service you are using?
Cheers,
Arek
