Question for the mac brains out there?

Started Apr 24, 2013 | Questions thread
AZBlue Senior Member • Posts: 1,044
Re: Question for the mac brains out there?

Outgoing mail servers require communication on a specific port, usually port 25. However, most ISPs block that port in order to prevent people from running their own mail servers and causing a load on bandwidth. If you were able to send mail at home, but are now on a different network in some other location, it's possible that your ISP at home does not block port 25 but the network you are using currently does block that port.

An alternative port number you can try is 587, you would make that change in your email account/server configuration settings. I use Outlook on Mac so I don't know where those would be in Mail, but you might give that a shot. I bet this is your issue, because not being to send mail is most likely an outgoing SMTP port blocking issue with your ISP.

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