I cannot SEND any e-mails in Windows 7 I get the above message. Some advice says change outgoing port from 25 to 587 I cannot find how to do this. anybody know how to do this or am I just??? Thank you Derick

  • 1
    What mail client are you using? Outlook? Outlook Express? Thunderbird? Opera? Something else?
    – balpha
    Oct 31, 2009 at 13:08

2 Answers 2


If this is Outlook / Windows Live Mail, it simply means that you have a tick under "This server requires a secure connection (SSL)".

Go to Tools > Accounts, then double click on the account and go to the Advanced Tab.

Untick this and check what port your provider uses.

link text

(This picture was the first I could find online, it deals with IMAP so ignore that, but it would be very similar)


Please make sure you have enable My Server requires authentication box, while you send mails this is required field by some of the Hosting providers. Also disable your Antivirus firewall which might be scanning your outgoing connection.

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