Telkom email problem

I have been a Telkom client for many years and they are my ISP (using ADSL) for many years. Since about 3 months ago I cannot send emails from using my normal email telkom email. I can send via my google email. I have lodged several complaints and telephonically spoke to several telkom agents but now one can resolve this issue. I have been told that it is an Outlook problem but this is absolute nonsense. I also cannot email from my Huawei mobile phone using the telkom portal. I used Outlook 2007 and had upgraded to Outlook 2016 thinking that it may help, still the same problem, both on my home pc and my mobile. My problem: Task ********** - Sending report error (0x ********** 9):"Outlook cannot connect to your outgoing (SMTP) e0mail server. If you continue to receive this message, contact your service adninistrator ot ISP.'

i have tried every possible suggestion on the internet changing SMTP numbers, but to now avail. Please, if anyone can help me I will a really appreciate it.