Possibly a Port issue, Aurhentication, or a hard to find typo?
The Password rejection can confuse people since it's a catch all meaning...
This Password, Username, Authentication method... is not recognized on this Port to this Server.
So since WebMail works it's not Name or Password, but one of the other ones.
The receiving email ports are:
IMAP is port 143
IMAP-SSL is port 993
POP is port 110
POP-SSL is port 995
Outgoing ports are...
SMTP and SMTP-SSL is on ports 25, 587 and 465. Port 587 has to be SSL, and port 465 is enforced TLS-wrapped and is generally used by Outlook users.
- Open Apple Mail.
- Click Mail then Preferences.
- Go to the Accounts tab and click the plus ➕ button underneath the Accounts field to add a new account.
- Select POP3 in Account Type.
- Enter your Optimum Online® e-mail address in the Email Address field.
- In the Full Name field, type your name how you'd like it to appear when people get e-mail from you (for example: John Smith).
- Enter your e-mail server name (see below for instructions) in the Incoming Mail Server field.
- Enter your Optimum ID in the User Name field. (Your Optimum ID is the part of your e-mail address to the left of the "@" sign, for example: jsmith.)
- Enter your password in the Password field.
- Enter your e-mail server name (see below for instructions) in the Outgoing Mail Server (SMTP) field.
- Click OK
If your email address uses @optonline.net
POP3 (Incoming)
Server: mail.optonline.net
Port: 110
SMTP (Outgoing)
Server: mail.optonline.net
Port: 587
If your email address uses @optimum.net
POP3 (Incoming)
Server: mail.optimum.net
Port: 110
SMTP (Outgoing)
Server: mail.optimum.net
Port: 587
