[RESOLVED] DNS SRV Record protocol

I am using Linode's DNS to manage records for a domain and I'm running into some trouble setting up SRV records for an e-mail server's autoconfig/autodiscover. All SRV records seem to add the protocol twice in the record. For example, '_autodiscover.tcp._tcp' instead of '_autodiscover._tcp'. This causes lookups for _autodiscover._tcp.domain.tld to return NXDOMAIN, and ultimately autoconfig functionality to fail on mail clients.

Is there a way to configure SRV records in Linode's DNS manager to not duplicate the protocol in the record?

Here is the configuration of my SRV record:
Service: _autodiscover
Protocol: tcp
Priority: 0
Weight: 1
Port: 443
Target: mail.domain.tld
TTL: Default