Geeklog Forums

Hi, My From header in the emails sent to the users is changed by the server. I did some intensive testing and found out that the From: username@domain.com is changed to From: username@provider.com the function mail() in the admin/mail.php is executed correctly, there the From-header is Ok, but when the email arrives at the recipient, its wrong! what can I do to prevent this? is it an evironment-setting at the server? can I override it? thanks