Comcast is unavailable in iPhone Mail

Mail settings for Comcast:

• Incoming Mail Server Name: imap.comcast.net
  • Incoming Mail Server Port Number: 993 with SSL ON
• If the Mail Client lets you select an authentication method, choose STARTTLS.
  • If Needed: 143 with SSL ON
• Outgoing Mail Server Name: smtp.comcast.net
• Outgoing Mail Server Port Number: 587 (SMTP)
  • If Needed: 465 (SMTPS)
• Encryption: TLS (use SSL if TLS isn't shown.)
• Authentication: Type in your Comcast username and password