strange email sending issues

[Auron]

ok heres the thing, notifications and emails dont work for my account on the forum.. not gotten around to asking the other admin yet...

however heres the weirdness, l used the diagnostic tool to send to both my forum email and my gmail with both -f and normal mode. the email arrives at my gmail account but it does not arrive as my forum email address.

whats puzzling me is that l have my address whitelisted for the spam filters, and if it did get snagged by the spam filter ld see it so l could whitelist the address.

an example of my setup mailwise would be:

vbulletin settings
domain: example.com
email notifications come from: no-reply@example.com

now lets say l test the diagnostic tool and send to me@example.com the email doesnt arrive nor does it send regardless of any settings l make, however if l input my gmail address into the diagnostic tool it sends and arrives fine.

so what lm assuming is vbulltin isnt even sending the emails that are associated with the forum scripts domain but anything thats sent to a domain other than the one the forum script is associated with in this example "gmail" it works fine.