XF 2.0 ErrorException: Email to name@myemail.com failed: [E_WARNING] stream_socket_enable_crypto():

[BassMan]

Suddenly I'm getting this after email sending from my forum:

Server error log
ErrorException: Email to name@myemail.com failed: [E_WARNING] stream_socket_enable_crypto(): Peer certificate CN=`myHost' did not match expected CN=`smtp.sparkpostmail.com' src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php:94
Generated by: 
Stack trace
#0 [internal function]: XF::handlePhpError(2, '[E_WARNING] str...', '/home/.../p...', 94, Array)
#1 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php(94): stream_socket_enable_crypto(Resource id #202, true, 9)
#2 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/EsmtpTransport.php(313): Swift_Transport_StreamBuffer->startTLS()
#3 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(118): Swift_Transport_EsmtpTransport->_doHeloCommand()
#4 src/XF/Mail/Mailer.php(276): Swift_Transport_AbstractSmtpTransport->start()
#5 src/XF/Mail/Mail.php(335): XF\Mail\Mailer->send(Object(Swift_Message), Object(Swift_SmtpTransport))
#6 src/XF/Service/Contact.php(144): XF\Mail\Mail->send()
#7 src/XF/Pub/Controller/Misc.php(78): XF\Service\Contact->send()
#8 src/XF/Mvc/Dispatcher.php(249): XF\Pub\Controller\Misc->actionContact(Object(XF\Mvc\ParameterBag))
#9 src/XF/Mvc/Dispatcher.php(88): XF\Mvc\Dispatcher->dispatchClass('XF:Misc', 'Contact', 'json', Object(XF\Mvc\ParameterBag), '', Object(XF\Pub\Controller\Misc), NULL)
#10 src/XF/Mvc/Dispatcher.php(41): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#11 src/XF/App.php(1889): XF\Mvc\Dispatcher->run()
#12 src/XF.php(328): XF\App->run()
#13 index.php(13): XF::runApp('XF\\Pub\\App')
#14 {main}

I didn't change any settings. What is the problem? Emails are not working for any of my board.

 

[Nirjonadda]

Do rebooting your server. So you are using CSF?

 

[BassMan]

Do rebooting your server.

I can't, it's on a shared server.

So you are using CSF?

Not that I know.

Like said, I didn't change anything and it was working fine for a long time. Has this something to do with SSL?

 

[Nirjonadda]

Ask for restarting server.

 

[BassMan]

I've disabled SMTP and use default email transport method and this one works. So it must be something with SMTP...

 

[Nirjonadda]

So it must be something with SMTP...

Yes but restart the server will fix this.

 

[BassMan]

Just got an answer from my host that restart wouldn't solve this.

 

[Nirjonadda]

Just got an answer from my host that restart wouldn't solve this.

OK but do you Ask for restarting server? Do restarting server the server then see if this fix. No need response that without restarting server. Host are very lazy.

 

[BassMan]

I did ask, but that answer was there is no need for that. They are working on it now, testing what error it shows and I hope they find a solution soon because I need to use the default email method, which is not good for my main forum.

 

[BassMan]

Hm, works now. Somehow firewall blocks it. Not sure why that happens.

 

[Nirjonadda]

So you are using CSF?

Hm, works now. Somehow firewall blocks it. Not sure why that happens.

I am asked it before. ConfigServer Security & Firewall - CSF.

 

[BassMan]

They said I'm whitelisted now