Choose mail certificate per ip
If you have several ip-addresses on your server it should be possible to choose a different certificate for each ip address.
While this may be a valid request in some specific cases it has not gained popularity with users over many years. For that reason we must decline it.
Some of our servers have several ip-addresses. So we can differentiate between our customers and the customers of our resellers. But each of our reseller wishes to use their own ssl certificate for mailing.