GMAIL SMTP certificate problem

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Berkay
Posts: 1
Joined: Thu Apr 23, 2020 9:54 am

GMAIL SMTP certificate problem

Postby Berkay » Thu Apr 23, 2020 10:06 am

Hello,

I've been using gmail as a client for my zimbra account (business e-mail address) without any problem for n.5 years.

however, starting last week, I have started to receive an error message when I try to send e-mails. (receiving them is still fine).

"Server returned error: "TLS Negotiation failed, the certificate doesn't match the host., code: 0"

Some resources informs that, Google won't accept self signed certificates starting from april 2020, so I need to use a certificate signed by a recognised CA.

Do you have any solution for this problem? How can I resume using gmail for sending emails?

Thank you in advance


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fs.schmidt
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Posts: 262
Joined: Sat Sep 13, 2014 3:37 am
Location: Brazil
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Re: GMAIL SMTP certificate problem

Postby fs.schmidt » Thu Apr 23, 2020 2:53 pm

Hello,

You can use Let's Encrypt which is free:

https://wiki.zimbra.com/wiki/Installing_a_LetsEncrypt_SSL_Certificate
My best regards,
Fabio S. Schmidt
http://www.bktech.com.br
Brasília - Brazil

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