The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. c9sm8935080pdj.52 - gsmtp

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while send sms
following error is generating

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. c9sm8935080pdj.52 - gsmtp

Posted 15-Dec-14 0:04am

Harishankar Maurya

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Lucifier Rocks · Answer 1 · 2014-12-16T18:18:00

Solution 2

It may be that site has certificates attached to it or the user name and password that is being passed are not correct please check both the things

Posted 16-Dec-14 18:18pm

Lucifier Rocks

Harishankar Maurya · Answer 2 · 2014-12-15T00:07:00

Solution 1

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. c9sm8935080pdj.52 - gsmtp

Posted 15-Dec-14 0:07am

Harishankar Maurya

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Deepu S Nair 16-Dec-14 5:40am

Please don't post your question as solution.Use Improve question to edit your question.