Hi paul,
Apparently the script sending the mail is not correctly interpreting the "From: " header. In such a case, php mail() function uses the default email address as set in php sendmail_from.
Use "From:
youremail@yourdomain.tld" in the headers. Optionally, in some cases, you need to add the -f parameter in the mail function
Eg. NORMAL: mail("recipient@somedomain.com","Subject comes here", "This is the message text", "From:
youremail@yourdomain.com");
WITH -F: mail("recipient@somedomain.com","Subject comes here", "This is the message text", ,"-fyouremail@yourdomain.com");
Hope this helps
Regds
IJ