Outlook 2011 and Mobile Broadband - Won't Send Emails

Discussion in 'Mac Applications and Mac App Store' started by andy2181, Dec 15, 2010.

  1. macrumors newbie

    Joined:
    Dec 15, 2010
    #1
    I have been using for outlook 2011 without any dramas until yesterday when i got a new mobile broadband ISP (Telstra). I can receive emails fine but when I try to send any I get the following error:

    "Outlook cannot connect to the server. Verify that your computer is connected to the network."

    But as soon as I disconnect the mobile broadband and connect to any available wireless connection the email sends fine.

    I spoke to my ISP and they have no idea, because they don't support outlook 2011.

    Any ideas?
     
  2. macrumors 6502a

    Joined:
    Jul 22, 2010
    #2
    I run into the same issue with the wifi at work. If you have the firewall enabled, try disabling it to see if that works.
     
  3. macrumors 68000

    NATO

    Joined:
    Feb 14, 2005
    Location:
    Northern Ireland
    #3
    Are you using your ISP's SMTP server? If so, usually you have to be using your ISP internet connection otherwise it will reject the connection (unless the SMTP server has username/password authentication). If you're using mobile broadband it might see the request coming from outside their network and reject accordingly.

    If this is the case you might want to check if your ISP's SMTP server supports authentication or else find a universal SMTP server you can use instead.

    I think the reason is to stop spammers using the server, only the ISP's customers can send through it.
     
  4. macrumors G4

    Joined:
    Jul 17, 2002
    Location:
    USA
    #4
    NATO is correct. You have encountered an almost universal security measure to prevent the use of SMTP servers as SPAM relays by foreign email accounts. It has nothing to do with firewalls. At any rate, you are probably trying to use unsecured SMTP on Port 25. In many cases, changing to authenticated SMTP on Port 587 will do the trick. There other secure SMTP ports, but 587 is most common and the one that you should try first.
     
  5. thread starter macrumors newbie

    Joined:
    Dec 15, 2010
    #5
    port 587 worked!! Thanks lads. Now I have no excuses for not doing my work :)

    Thanks guys
     
  6. macrumors G5

    Macman45

    Joined:
    Jul 29, 2011
    Location:
    Somewhere Back In The Long Ago
    #6
    Tried It

    Tried 587 and get a different error unknown message.

    Not using 25 thats an oldie!

    Anyone else?
     
  7. macrumors G5

    Macman45

    Joined:
    Jul 29, 2011
    Location:
    Somewhere Back In The Long Ago
    #7
    Just Been Looking On The MSSite

    The known issues with Office 2011 for Mac are endless. According to both VM and MS, port 465 should work for outgoing mail....But it won't plenty of people having the same problem, so guess it is an MS issue.

    Thunderbird works perfectly, so I paid the extra for a product that doesn't work!

    Be warned!!
     

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