The remote certificate is invalid

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Posted on by subrata.bauri

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Dear all,

I have faced the following error message while trying to send SMTP mail from SMTP Server (smtp.gmail.com).

Microsoft Dynamics NAV

The SMTP mail system returned the following error: "The remote certificate is invalid according to the validation procedure.".

This is happening in the PC where NAV Server is installed.

How to solve it ?

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Nareshwar Raju Vane... 5,596 on at

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This usually occurs because either,

certificate is self-signed and not added as a trusted certificate.

certificate is expired.

certificate is signed by a root certificate that's not installed on your machine.

Please check the certificates and let us know. Hope it helps.

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subrata.bauri 1,144 on at

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Certificate is expired. I want to renew it.

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Nareshwar Raju Vane... 5,596 on at

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Hi,

Please let us know if it is resolved or facing any more issues.

Regards,

Naresh.

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Community Member on at

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Which certificate?

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subrata.bauri 1,144 on at

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I've created a new certificate, but still the same error message is coming.

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subrata.bauri 1,144 on at

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Q. Which certificate?

A. Server certificate

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Community Member on at

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Try sending mail using 397 Mail Codeunit (Using Outlook).

Gmail may not allow you to send the mail via NAV.

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subrata.bauri 1,144 on at

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Hi,

I'm using codeunit 400 (NAV2013R2) & able to send emails from smtp.gmail.com server in my Test Machine but can not do the same in Live Server.

While trying to send emails from Live Server, it gives the error message like "The SMTP mail system returned the following error: "The remote certificate is invalid according to the validation procedure.".

As per error message I have checked the Certificate & it's found expired. So I've created a new one but still facing the same error message.

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Ngotie 24 on at

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Turn off the your anti-virus 'Mail Shield' and in your gmail account turn on the 'Allow less Secure apps'.

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Brammah 5 on at

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This can happen when you have installed an antivirus on your server and the "Scan Outbound Emails" on your basic protection is activated. Just uncheck it and you should be fine.

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