WP Mail SMTP Not sending any Emails

Hi @marianodevbus,

When you get a chance, could you please try sending a test email (under Settings > WPForms > Email Test) and share the details of the error from that here?

This will help us to get a better idea of what might be going on.

Thanks!

Hi, @sanzeeb3 ,

Thank you for your answer. These are the details of the error.

“Could not connect to the SMTP host.

-The SMTP settings are incorrect (incorrect port, security settings, incorrect host).
-Your web server is blocking the connection.
-Your SMTP host is rejecting the connection.”

But if I send direct email, from an email account, I receive the emails but from the contact form I don’t receive them.

Thanks.
Mariano

Hi @marianodevbus,

Thank you for the details. It seems you haven’t configured the settings correctly, possibly incorrect SMTP Host ‘outlook.office365.com’. In case it helps, here are SMTP settings for popular providers. After you setup SMTP correctly and still having issues, please share the full error log. In case it helps, here’s a screenshot to get full error log.

I hope this helps ?? !

Hi @sanzeeb3,

I have followed the configuration help instructions for SMTP settings for popular providers and it still doesn’t work.

Click here to view the complete error log for debugging

Versions:
WordPress: 5.2.2
WordPress MS: No
PHP: 7.2.19
WP Mail SMTP: 1.5.2

Params:
Mailer: smtp
Constants: Yes
ErrorInfo: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
Host: outlook.office365.com
Port: 587
SMTPSecure: tls
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.0.2k 26 Jan 2017
SMTP Debug:
2019-07-26 09:49:43 Connection: opening to outlook.office365.com:587, timeout=300, options=array (
)
2019-07-26 09:49:46 Connection: Failed to connect to server. Error number 2. “Error notice: stream_socket_client(): unable to connect to outlook.office365.com:587 (Network is unreachable)
2019-07-26 09:49:46 SMTP ERROR: Failed to connect to server: Network is unreachable (101)
2019-07-26 09:49:46 SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting.

Thank you very much.
Mariano

In this website

https://wpforms.com/docs/how-to-set-up-smtp-using-the-wp-mail-smtp-plugin/#provider-settings

it says that you should use

smtp.office365.com

but in your error log it says you are using ‘outlook.office365.com’. Do you have the right SMTP host in your settings?

Have you tried installing an desktop email client (such as Mozilla Thunderbird) and sending emails through that client using those exact same settings? It might help you with debugging this problem. This might help you:

https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-office-3

It would help if you would send picture of your settings (where password and username are blurred).

• This reply was modified 5 years, 7 months ago by kysymysteke.
• This reply was modified 5 years, 7 months ago by kysymysteke.

Hi @marianodevbus,

Please double check your SMTP settings. Like @kysymysteke said, you’re using an incorrect SMTP host. Please follow this tutorial to get correct SMTP settings.

I hope this helps!

Hi @marianodevbus – We haven’t heard from you in about a week, so I’m going to go ahead and mark this ticket resolved. If you still have questions, though, please feel welcome to continue the conversation.

I have the free version of the WP Mail SMTP plugin (1.5.2) and have noticed that emails have been failing to send (even though the SMTP settings are correct).

Error Log from Test Email:

Versions:
WordPress: 5.2.2
WordPress MS: No
PHP: 7.2.19-0ubuntu0.18.04.1
WP Mail SMTP: 1.5.2

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: Could not connect to SMTP host.
Host: smtp.office365.com
Port: 587
SMTPSecure: tls
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.1.0g 2 Nov 2017
Apache.mod_security: No
SMTP Debug:

2019-08-13 20:34:32 Connection: opening to smtp.office365.com:587, timeout=300, options=array (
)
2019-08-13 20:34:32 Connection: opened
2019-08-13 20:34:32 SERVER -> CLIENT: 220 MN2PR17CA0032.outlook.office365.com Microsoft ESMTP MAIL Service ready at Tue, 13 Aug 2019 20:34:31 +0000
2019-08-13 20:34:32 CLIENT -> SERVER: EHLO $domain
2019-08-13 20:34:37 SERVER -> CLIENT: 501 5.5.4 Invalid domain name [MN2PR17CA0032.namprd17.prod.outlook.com]
2019-08-13 20:34:37 SMTP ERROR: EHLO command failed: 501 5.5.4 Invalid domain name [MN2PR17CA0032.namprd17.prod.outlook.com]
2019-08-13 20:34:37 CLIENT -> SERVER: HELO $domain
2019-08-13 20:34:42 SERVER -> CLIENT: 501 5.5.4 Invalid domain name [MN2PR17CA0032.namprd17.prod.outlook.com]
2019-08-13 20:34:42 SMTP ERROR: HELO command failed: 501 5.5.4 Invalid domain name [MN2PR17CA0032.namprd17.prod.outlook.com]
2019-08-13 20:34:42 CLIENT -> SERVER: STARTTLS
2019-08-13 20:34:47 SERVER -> CLIENT: 503 5.5.2 Send hello first [MN2PR17CA0032.namprd17.prod.outlook.com]
2019-08-13 20:34:47 SMTP ERROR: STARTTLS command failed: 503 5.5.2 Send hello first [MN2PR17CA0032.namprd17.prod.outlook.com]
2019-08-13 20:34:47 SMTP Error: Could not connect to SMTP host.
2019-08-13 20:34:47 CLIENT -> SERVER: QUIT
2019-08-13 20:34:47 SERVER -> CLIENT: 221 2.0.0 Service closing transmission channel
2019-08-13 20:34:47 Connection: closed
2019-08-13 20:34:47 SMTP Error: Could not connect to SMTP host.

Seems like there may be an issue with the client passing in “$domain”, rather than the domain of my webpage.

Let me know if there is any immediate solution.

Thanks!

• This reply was modified 5 years, 6 months ago by bwjohnson1.

Hi @bwjohnson1,

The error you’re getting usually occurs if you authenticate the improper user (the user/password is incorrect). Make sure you’ve authenticated your Office 365 account and not outlook or other Microsoft accounts.

Thanks!

Hi @sanzeeb3 ,

The username and password of the Office 365 account I’m authenticating with are both correct.

Notice that the EHLO command with “$domain” fails and gives the response “501 5.5.4 Invalid domain name [MN2PR17CA0032.namprd17.prod.outlook.com]” (I’ve seen this same error with other SMTP WordPress plugins as well).

Thanks for your help.

UPDATE @sanzeeb3 :

The issue was that inside my active Apache virtual hosts configuration file (000-default.conf), I was using ‘$domain’, as opposed to the domain itself, for the ServerName under 80 and 443.

Once I replaced this in both locations the test email was sent successfully.

Hi @bwjohnson1,

Great to know that you sorted it out. And thanks for taking the time to let us know with the details. I really appreciate it.

Have a good one! ??