aski71

The two sites I’m using it for and from are musoc.de and alexsebastian.de

What do you mean by: The site URL I initially provided seems to be invalid?

Hi @sanzeeb3 ,

oh, ok. I did not receive anything. It’s also not in the Spam folder.
Can you send again, please?

Regards,
Alex

Hi @sanzeeb3 ,
filled everything out a few days ago.
Did you receive it?

Thanks,
Alex

Hi @sanzeeb3,

it’s definitely WP Mail SMTP that’s causing the problem. If I deactivate WP Mail SMTP, the Mails from User Meta work fine. So something within WP Mail SMTP seemingly blocks these emails.

I’m not using the freeware User Meta plugin, but the User Meta Pro version.

Thanks for additional help.

Best regards,
Alex

Hi @sanzeeb3 ,

no additional insight so far from the User Meta guys than what I provided above.
Any chance you can diagnose this directly on my site?

Best regards,
Alex

Hi @sanzeeb3,

I’m using the Pro version of User Meta.
Their support went on my web site to test and came back with the email above.

Their feedback about was that WP Mail SMTP prevents UMP to be triggered while the password reset function is called.

Of course I can ask them for more details.

Best regards,
Alex

Any idea?
Looking for a solution urgently.
Thanks.

Hi,

I had the time today to review the documentation link shared by @sanzeeb3 three posts above.
Obviously the cacerts were not linked in my system.
I was able to resolve this problem by following the instructions under “Updating CA certificates” and adding the correct location of the cacert.pem to my php.ini.
Now it works again.

Thanks for your help!

Best regards,
Alex

Hi sanzeeb3,

the server is managed by Plesk and certificated are generated and renewed by LetsEncrypt. I don’t do anything in addition. This worked for more than a year now. So I’m a little confused. Will have a look into the documentation provided above with a little more time in the next days.

In addition:
Today I found that another plugin that uses WP Mail SMTP is still not working.
It’s called Events Manager. Within the email settings I tell it to use WP Mail. When I hit the “test mail” button, all works fine and the test mail goes out.
When the plugin Events Manager tries to send an email from front end interaction of a user, it fails.

When I change the settings of Events Manager to use “PHP Mail Function” instead of “WP Mail” it also works from the front end.

Any idea?

Hi @sanzeeb3,

tried this custom code in the described way using the code snippets plugin.
This is working.
But I still don’t understand, why this is necessary?

Do you have any hit, why the certificate is rejected by WP but works with any other client?

Regards,
Alex

Does this point to anything?

AH01071: Got error 'PHP message: PHP Warning: stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages:\nerror:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed in /var/www/vhosts/musoc.de/httpdocs/wp-includes/class-smtp.php on line 368', referer: https://musoc.de/wp-admin/admin.php?page=wp-mail-smtp&tab=test

Might be related to me sending test mails via the plugins test mail function.

I usually update pretty quickly. So I updated from the most recent version.
Maybe this is a strange coincidence, but I did not change anything else on my V-Server. The day after the update of the plugin it stopped working and users complained they were getting an error message.

Thanks, Alex

Hi @sanzeeb3,

I use my mailing host with several other SMTP and IMAP clients: They all work fine using TLS.

WP and the postfix run on my vServer. So I can rule out the hosting provider. ??

None of my other clients show any issues. All clients can send and receive emails properly, connecting to the server via the internet using TLS.
All I can say is: Before updating to 1.6.0 everything worked smoothly. Since the update to 1.6.0 it doesn’t anymore.

Checked the firewall on the server: No blocked ports. (If the ports were blocked this would also affect other clients, right? But all other clients work.)
It’s also not a DNS failure or local network issue: Other clients work and setting the server (in WP Mail SMTP) to localhost (using TLS) does not solve the issue either.

Setting WP Mail SMTP to unencrypted on port 25 with server localhost works fine.

Just do double check: Where does the openssl extension need to be loaded? And how?
Should not be an issue because it worked before. I just want to make sure.

Thanks, Alex

Very cool!
Thank you so much for digging this up!
Alex

I don’t know exactly what it was. In the meantime I had to migrate all my websites and Motamo to a new server. After migration everything worked well again.