CORRECT settings for Android?? (Samsung 8(

My  SENT email from my device are getting stuck in the Outbox. (receiving email is fine) My Android device, SamSung 8 OS is up to date according to T-Mobile rep who is the store Manager and owns a Samsung.

Are these the NEW correct settings FOR ANDROID?

INCOMING SERVER: IMAP.cox.net

SECURITY TYPE: SSL

PORT: 993

IMAP path prefix OPTIONAL

OUTGOING SERVER: smtp.cox.net

SECURITY TYPE: TLS 

PORT: 587 (I tried 487, 465,, too = no luck)