Assistance with Vodamail

I've had a data contract with Vodacom with a vodamail e-mail for about two years. This e-mail reflects on all my business cards, correspondence and webpage. A week ago I discovered that I could only receive e-mails through Vodamail but could not send any.<br> <br> When sending e-mails(no bulk e-mails) I get the following error message: Subject: Considered UNSOLICITED BULK EMAIL, apparently from you A message from ...to: ...was considered unsolicited bulk e-mail (UBE).<br> <br> I've called the Vodacom help centre more than once and was told that there is no technical problem on the side of Vodacom, that it must be a setting on my computer and that I must take my laptop to a Vodacentre. I took it to two different centres and both indicated there is nothing wrong with my settings. Snapshots were taken of my screen and send to the national technical centre, but no feedback or resolution.<br> <br> The fact that I can not send e-mails through vodamail is having a detrimental impact on my ability to do business and I'm referred from one Vodacom official to another with no one who can give me a clear reason for the problem or help me to resolve it. Please help.<br>