SMTP Gmail connection issue

Hi @windhunde

Thanks for reaching out and we’re sorry to hear that you’re suddenly experiencing issues with connecting to the Gmail SMTP host.

• Just to confirm, are you using the latest version of Easy WP SMTP? Are you also using the latest version of WordPress and your theme?
• What other plugins do you currently have enabled?
• Are you connecting to the Gmail SMTP host using your normal password or an App password that was generated here?
• To confirm if this is a server specific issue, can you try connecting to one of the alternate example SMTP hosts mentioned in our quick start guide?

I hope this helps ??

I just upgraded to 2.0.1 (was 1.5.3) and am now getting debugging data from the test. WP version 6.1.1, theme is up to date.

We were using a password, then during troubleshooting switched to an app password which also failed.

It looks like gmail smtp is rejecting based on not liking our host’s certificate (or mismatch with our domain?)

Versions:
WordPress: 6.1.1
WordPress MS: No
PHP: 8.1.15
Easy WP SMTP: 2.0.1

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=rsq.petrescuehosting.net' did not match expected CN=smtp.gmail.com'SMTP server error: QUIT command failed Detail: j //
Host: smtp.gmail.com
Port: 587
SMTPSecure: tls
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.1.1t 7 Feb 2023
SMTP Debug:
2023-02-16 14:22:32 Connection: opening to smtp.gmail.com:587, timeout=30, options=array()

2023-02-16 14:22:32 Connection: opened

2023-02-16 14:22:32 SERVER -> CLIENT: 220-rsq.petrescuehosting.net ESMTP Exim 4.96 #2 Thu, 16 Feb 2023 09:22:32 -0500 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail.

2023-02-16 14:22:32 CLIENT -> SERVER: EHLO www.pawsonthemountain.org

2023-02-16 14:22:32 SERVER -> CLIENT: 250-rsq.petrescuehosting.net Hello www.pawsonthemountain.org [170.75.251.59]250-SIZE 52428800250-8BITMIME250-PIPELINING250-PIPECONNECT250-AUTH PLAIN LOGIN250-STARTTLS250 HELP

2023-02-16 14:22:32 CLIENT -> SERVER: STARTTLS

2023-02-16 14:22:32 SERVER -> CLIENT: 220 TLS go ahead

2023-02-16 14:22:32 Connection failed. Error #2: stream_socket_enable_crypto(): Peer certificate CN=rsq.petrescuehosting.net' did not match expected CN=smtp.gmail.com' [/home/ghrescue/public_html/wp-includes/PHPMailer/SMTP.php line 468]

SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=rsq.petrescuehosting.net' did not match expected CN=smtp.gmail.com'

2023-02-16 14:22:32 CLIENT -> SERVER: QUIT

2023-02-16 14:22:33

2023-02-16 14:22:33

2023-02-16 14:22:33 Connection: closed

SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=rsq.petrescuehosting.net' did not match expected CN=smtp.gmail.com'

Hi @windhunde

Thank you for keeping us posted.

You’ll need to reach out to your hosting provider about this so they can look into why this error is coming up. Essentially there is an issue with the SSL certificate. You can send over the whole error message, but definitely make sure to send over this part:

==============
2023-02-16 14:22:32 Connection failed. Error #2: stream_socket_enable_crypto(): Peer certificate CN=rsq.petrescuehosting.net’ did not match expected CN=smtp.gmail.com’ [/home/ghrescue/public_html/wp-includes/PHPMailer/SMTP.php line 468]

SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=rsq.petrescuehosting.net’ did not match expected CN=smtp.gmail.com’
==============

The connection is attempting to reach the smtp.gmail.com server, but the error shows that the certificate is coming up for rsq.petrescuehosting.net.

I hope this helps ??