Thanks @david64 for your reply it spurred me to carry on (after several frustrating calls to TPG). I took another look at the ports. TPG advised the following settings for POP Account: incoming 110 outgoing 25   However, I've determined that settings for my situation need to be : incoming 110 outgoing 465 also that the following settings are required: Encryption method = SSL/TLS My outgoing SMTP server require authentication = ticked, and option = "Use same settings as my incoming mail server"   This has been determine by trial and error. It works for me and hopefully helps others. Now I just need to research what the security settings should be. Any pointers would be appreciated. ... View more

I have the same problem. Was this issue resolved? I can send emails over tpg postoffice website and on my iPhone, but Outlook now can't send after working fine for years (and can still receive).   I get the following error in Outlook: Task 'sysclear - Sending' reported error (0x80042109) : 'Outlook cannot connect to your outgoing (SMTP) email server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).' ... View more