NOT ALL OPTIONS ARE WORKING PROPERLY

I have recently changed from TELKOM ADSL to MTN FIBRE for my internet data usage.<br> <br> My Outlook and emails were working perfectly before with the options marked for READ RECEIPTS AND DELIVERY NOTIFICATIONS.<br> So that means when an email was delivered successfully I would get a DELIVERY NOTIFICATION letting me know that the email went through successfully and when the email I sent was READ by the recipient, I would get a READ RECEIPT informing me that the recipient had READ the email.<br> <br> Now all I did was change the SMTP from TELKOM to MTNBUSINESS and now the DELIVERY NOTIFICATIONS are not working. I am still getting READ RECEIPTS but not the DELIVERY NOTIFICATIONS.<br> <br> I have tried phoning and speaking to the MTN \Technical Support"but they are asking me questions like which windows am I running and other totally irrelevant questions and they are telling me that it is outlook that is having the problem when I clearly know that when I put TELKOM back in as SMTP it suddenly starts working again so clearly the problem is with the MTN FIBRE server.<br> <br> PLEASE CAN SOMEONE KNOWLEDGABLE HELP ME GET THIS PROBLEM SORTED OUT.<br> <br> THANK YOU.<br> """