I see, your problem lies in the SMTP2 Outbound server since you can receive emails from hotmail with no problem.
since SMTP2 is your server , i think that fusemail SPAM filter is blocking your SMTP Outbound server and is identifying it as SPAM. to make sure of that, you need to do the following:
1- Contact FuseMail
2 - Open - www.spamhaus.org and then use it to identfy if your IP address has been reported as SPAM if yes, use the site to remove your listing from the SPAM list., i think that the powerful SPAM Filters at Fusemail is blocking your SMTP Server, it happens.