"Unadvertised SMTP" email receive/send issue

Club #2289 - talktm.toastmastersclubs.org/

I'm getting the error below when trying to add a new member via the Membership Management dialog.
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You have errors in your form below. Please scroll down and correct the following:

1. Invalid/Non-functioning E-mail: dianne.kuehner@zoomtown.com (No advertised SMTP servers are accepting mail.

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try it now it should work.