Can not send mail from the default mail app from my iPhone 8 Plus having IOS 12.0.1 installed

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iOS & iPadOS

Hello
To my dismay I discovered that I can not send mail from the default mail app although I can receive mail. I have a Telkom and Vodamail account. I trried sending mail with Wifi turned on and on Mobile data only. To no avail. Other South-African iPhone users are experiencing the same thing. Is this a bug in IOS 12?

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