Contact form not sending emails (hosted on home.pl)

Hi all,

I'm trying to troubleshoot an issue with sending emails from contact form.
Probably it's caused by limitation set by home.pl - wordpress has to send an email from the email address that is configured on this server (more in Polish here - https://pomoc.home.pl/komunikaty/1067).
I've got an email address configured on the server, the same address is in my wordpress, but contact form still says that email has been sent, but never arrives.

There's no issue when using WP-Mail-SMTP to send test email or through contact 7 plugin - emails are coming.

Could I ask you for advise how to fix this problem ?

Hi,

Contact form uses default WP function for sending messages:
http://codex.wordpress.org/Function_Reference/wp_mail

Please check the default mails from the WP - e.g. when someone add a comment did your receive email?