Not receiving emails

Hi @yvonneosawa,

Thanks for reaching out! I’m so sorry to hear your emails haven’t been working for two years. Sure, we can help with this.

When you get a chance, could you please share a full error log recorded when you send a test email from WP Mail SMTP > Tools?

Here’s a screenshot for the option to get a full error log: https://a.supportally.com/i/CUbZck. This will give us an idea of what might be going on.

Please let me know.

Thank you ??

• This reply was modified 1 year, 4 months ago by Nukak Asanansi.

Hi @Nukak Asanansi

Versions:
WordPress: 6.4.1
WordPress MS: No
PHP: 8.1.24
WP Mail SMTP: 3.10.0

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=altar37.supremepanel37.com' did not match expected CN=smtp.office365.com'SMTP server error: QUIT command failed Detail: ??/?Z?$!x ?F{?? Ud#B221 altar37.supremepanel37.com closing connection
Host: smtp.office365.com
Port: 587
SMTPSecure:tls
SMTPAutoTLS:bool(true)
SMTPAuth:bool(true)

Server:
OpenSSL: OpenSSL 1.1.1w 11 Sep 2023
Apache.mod_security: No

Debug:
Email Source: WP Core Mailer: Other SMTP SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=altar37.supremepanel37.com' did not match expected CN=smtp.office365.com'SMTP server error: QUIT command failed Detail:

SMTP Debug:
2023-11-17 08:51:18 Connection: opening to smtp.office365.com:587, timeout=300, options=array()
2023-11-17 08:51:18 Connection: opened
2023-11-17 08:51:18 SERVER -> CLIENT: 220-altar37.supremepanel37.com ESMTP Exim 4.96.2 #2 Fri, 17 Nov 2023 08:51:18 +0000 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail.
2023-11-17 08:51:18 CLIENT -> SERVER: EHLO www.isteducation.com
2023-11-17 08:51:18 SERVER -> CLIENT: 250-altar37.supremepanel37.com Hello www.isteducation.com [198.23.59.208]250-SIZE 52428800250-8BITMIME250-PIPELINING250-PIPECONNECT250-AUTH PLAIN LOGIN250-STARTTLS250 HELP
2023-11-17 08:51:18 CLIENT -> SERVER: STARTTLS
2023-11-17 08:51:18 SERVER -> CLIENT: 220 TLS go ahead
2023-11-17 08:51:18 Connection failed. Error #2: stream_socket_enable_crypto(): Peer certificate CN=altar37.supremepanel37.com' did not match expected CN=smtp.office365.com' [/home/isteduca/public_html/wp-includes/PHPMailer/SMTP.php line 476]
SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=altar37.supremepanel37.com' did not match expected CN=smtp.office365.com'
2023-11-17 08:51:18 CLIENT -> SERVER: QUIT
2023-11-17 08:51:18
2023-11-17 08:51:18
2023-11-17 08:51:18 Connection: closed
SMTP Error: Could not connect to SMTP host. Connection failed. stream_socket_enable_crypto(): Peer certificate CN=altar37.supremepanel37.com' did not match expected CN=smtp.office365.com'

Hi @yvonneosawa,

Thanks so much for getting back to us with these details.

Please kindly know, that this error message indicates certificate verification failure on your server. Please, check this troubleshooting guide for more information:

https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting#certificate-verification-failure.

When you get a chance, could you please contact your hosting support and ask them to look into the issue? They should be able to resolve it.

?I apologize that we can’t provide an exact solution to the issue right now, but I hope the information provided above can help point you in the right direction.

Thanks ??