Add 587 to the list of ports to disable protocol detection
Port `587` is very commonly used for SMTP, and I think it would be useful to
have it included in the default list of ports to skip protocol detection.
@@ -359,6 +359,7 @@ const DEFAULT_IDENTITY_MAX_REFRESH: Duration = Duration::from_secs(60 * 60 * 24)
// https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt
const DEFAULT_PORTS_DISABLE_PROTOCOL_DETECTION: &[u16] = &[
25, // SMTP
+ 587, // SMTP
3306, // MySQL
];
