Blog registration email coming from default email

[Algorithmic]

Hi everyone,

When registering a blog at my site, the email comes from the default email account set up by the hosting provider (It's a long and ugly email address) I've set up the new email account to be support@domain.com

I've changed the settings both under s2Member general options, super admin options and user options to support@domain.com, but that doesn't seem to have done anything.

Any help is much appreciated.

Thank you.

[Algorithmic]

Bump please.