MailboxBusy = 450,
MailboxNameNotAllowed = 553,
MailboxUnavailable = 550,
- OK = 250,
+ Ok = 250,
ServiceClosingTransmissionChannel = 221,
ServiceNotAvailable = 421,
ServiceReady = 220,
SystemStatus = 211,
TransactionFailed = 554,
UserNotLocalTryAlternatePath = 551,
- UserNotLocalWillForward = 251
+ UserNotLocalWillForward = 251,
+ MustIssueStartTlsFirst = 530,
}
}