I've installed Frontpage (Mail) Extensions to this client's domain.com and he's using the Form Mail (webbot) component on his site.
The problem is that if he uses any email address outside his domain (e.g. email@example.com, etc) as the recipient address, the Form Mail wouldn't send anything to this address. But if he uses email address within his domain name (firstname.lastname@example.org), it works well.
I've tried to search the knowledge base and on this forum about this problem, but so far I've found nothing useful.
So could you please let me know what am I doing wrong and how to fix this?
Thanks in advance!