This resolved my problem Hope it solves yours. What had me confused is that there are actually TWO DIFFERENT places within Mail Preferences where you check the SSL box.once for Incoming and once for Outgoing Mail. Once I filled everything in here, my issue of sending emails was resolved. Often there is an 'Outlook 421 Cannot Connect to SMTP Server' Error when trying to send an email. Having mail server in local environment will give you advantage for your web application that have sending email feature. SMTP (Simple Mail Transfer Protocol) is a text-based protocol that handles email transmissions across IPs, where you send an email to the receiver by sending instructions and receiving a response code. I had check 'Use Secure Sockets Layer (SSL), then I had to choose 'Password' as the type of Authentication, and I had to fill in my user name and password. Setting up mail server on Mac OSX can be done using pre-installed Postfix. Once I opened this Advanced window, all my problems were here, as nothing was filled in! I had to choose 'Use default Ports (25,465,587). Choose this.Īfter I chose Edit SMTP Server list, at the next window half way down the window it says 'Account Information' or 'Advanced'. If you hold down the bar to the right, one of the choices is Edit SMTP Server List.

This is what solved my problem, bear in mind that I am using OSX 10.8.1, so these steps may not be exactly what you see in your Mail program if you are working with an earlier version of OSX.Īssuming all information on this main page correct, I went down to where it says Outgoing Mail Server (SMTP).

Dakoolist's suggestion did not resolve my problem of sending emails and my SMTP being 'offline'.

Smtp server on mac