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It's Urgent.Please help me. I am using Smtp adaptor with dynamic port in our project using free smtp server like,But I find follwing error when sending a message.

The server rejected the sender address. The server response was: 530 5.7.0 Must issue a STARTTLS command first. 7sm2420078yxd.44

How can solve this problem.and another way of using smtp adaptor in biztalk.

Thanks in advance


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