

1&1įor 1&1 servers, addresses include (Port 25 or 587) for a POP server, for an SMTP server, and for an IMAP server. Standard ports for most SMTP / IMAP / POP3 servers include SMTP AUTH (Port 25 or 587), SMTP SSL (Port 465), SMTP StartTLS (Port 587), POP3 (Port 110), IMAP (Port 143), IMAP SSL (Port 993), and IMAP StartTLS (Port 143). SMTP and POP Server Addresses for Major ISPs Standard Ports

Select OK, and then select the Advanced tab.Use Secure Sockets Layer (SSL) is selected.Use default ports (25, 265, 587) is selected.From the Outgoing Mail Server (SMTP) drop-down, select Edit SMTP Server List.For IMAP accounts, enter for the Incoming Mail Server, and for the Outgoing Mail Server (SMTP).

For POP accounts, enter for the Incoming Mail Server and for the Outgoing Mail Server (SMTP).On the Account Information tab, verify you have POP3 or IMAP selected, and your User Name and Password are correct.Once you have your Mac Mail open, follow these steps to update your server settings. On the Internet E-mail Settings window, select Next.For IMAP accounts, the Incoming server (IMAP) is port 993, the checkbox for This server requires a secure connection (SSL) is selected, and the Outgoing server (SMTP) is port 465 or 587.For POP3 accounts, the Incoming server (POP 3) is port 995, the checkbox for This server requires a secure connection (SSL) is selected, and the Outgoing server (SMTP) is port 465.Use same settings as my incoming mail server is selected.My outgoing server (SMTP) requires authentication is checked.Select More Settings, and then the Outgoing Server tab.Verify your User Name and Password are correct.For IMAP accounts, enter for your Incoming mail server, and for Outgoing mail server.For POP 3 accounts, enter for your Incoming mail server and for Outgoing mail server.In Internet Email Settings verify you have POP3 or IMAP selected, and your User Name and Password are correct.Select File, and then Account Settings.Once your Outlook is open, follow these steps.
