Not receiving emails from conversation block

We have developed a blog as part of our Concrete 5 site and used the Conversation block for blog post commenting. Comments post just fine, but I never receive the emails informing me that a comment or reply has been left. To ensure that my server was allowing emails, I used the "Forgot Password" feature on the login screen. I received that email just fine.

When I check the log after posting a comment, there is an entry saying that the mail was sent, but it is immediately followed by an additional entry (Channel: exception) with an error message that says:


Mail Exception Occurred. Unable to send mail: Unable to send mail: Unknown error
#0 [internal function]: Zend\Mail\Transport\Sendmail->mailHandler('[email protected]', '=?UTF-8?Q?New=2...', 'Lindsey has pos...', 'Date: Mon, 25 J...', ' -f concrete5-n...')
#1 /home1/sycamov4/public_html/concrete/vendor/zendframework/zend-mail/src/Transport/Sendmail.php(139): call_user_func(Array, '[email protected]', '=?UTF-8?Q?New=2...', 'Lindsey has pos...', 'Date: Mon, 25 J...', ' -f concrete5-n...')
#2 /home1/sycamov4/public_html/concrete/src/Mail/Service.php(497): Zend\Mail\Transport\Sendmail->send(Object(Zend\Mail\Message))
#3 /home1/sycamov4/public_html/concrete/src/Conversation/Message/Message.php(427): Concrete\Core\Mail\Service->sendMail()
#4 /home1/sycamov4/public_html/concrete/tools/conversations/add_message.php(99): Concrete\Core\Conversation\Message\Message::add(Object(Concrete\Core\Conversation\Conversation), Object(Concrete\Core\Conversation\Message\Author), NULL, 'This is the fir...', NULL)
#5 /home1/sycamov4/public_html/concrete/src/View/View.php(181): include('/home1/sycamov4...')
#6 /home1/sycamov4/public_html/concrete/src/View/AbstractView.php(123): Concrete\Core\View\View->renderViewContents(Array)
#7 /home1/sycamov4/public_html/concrete/src/Routing/ControllerRouteCallback.php(37): Concrete\Core\View\AbstractView->render()
#8 /home1/sycamov4/public_html/concrete/src/Routing/Router.php(115): Concrete\Core\Routing\ControllerRouteCallback->execute(Object(Concrete\Core\Http\Request), Object(Concrete\Core\Routing\Route), Array)
#9 /home1/sycamov4/public_html/concrete/src/Support/Facade/Facade.php(119): Concrete\Core\Routing\Router->execute(Object(Concrete\Core\Routing\Route), Array)
#10 /home1/sycamov4/public_html/concrete/src/Application/Application.php(392): Concrete\Core\Support\Facade\Facade::__callStatic('execute', Array)
#11 /home1/sycamov4/public_html/concrete/src/Application/Application.php(392): Concrete\Core\Support\Facade\Route::execute(Object(Concrete\Core\Routing\Route), Array)
#12 /home1/sycamov4/public_html/concrete/bootstrap/start.php(331): Concrete\Core\Application\Application->dispatch(Object(Concrete\Core\Http\Request))
#13 /home1/sycamov4/public_html/concrete/dispatcher.php(36): require('/home1/sycamov4...')
#14 /home1/sycamov4/public_html/index.php(2): require('/home1/sycamov4...')
#15 {main}
Template Used: new_conversation_message
To: [email protected]
From: [email protected]
Subject: New Message on Conversation: Test Post
Lindsey has posted a new message to the conversation "Test Post":

This is the first comment.

You can view the whole conversation at


Can anybody help point me in the direction of what I might do to fix this problem so that I can receive emails any time a comment is left on the blog??

View Replies:
MrKDilkington replied on at Permalink Reply
Hi lmestep,

The page link you posted is not found.

I went to the blog entry on the main site and it is using Disqus to handle comments.

Is this question regarding Disqus or the Conversation block?
lmestep replied on at Permalink Reply
The question was originally about the C5 conversations block. However I tried everything I could to figure out why the emails were not sending (including rebuilding the site from scratch...gah!). I finally gave up and used Disqus for the commenting just because I needed to get the site launched for the client. Did the original message give you any clue into what I might have been missing or doing wrong?
lmestep replied on at Permalink Reply
I'll also mention that I originally built the site using Couldn't get this working, so I rebuilt using in case it was a bug in the latest release. When I got the same results, I updated back to
MrKDilkington replied on at Permalink Reply

My online server with mail function is running I just tested the "Users To Receive Conversation Notifications" function and it works as expected. The users listed were notified when new comments were made.
Dashboard > System & Settings > Conversations > Notification > Users To Receive Conversation Notifications
lmestep replied on at Permalink Reply
I had checked that earlier and it was properly set to notify me. I'm not sure if any others have had this issue with or if I had an error somewhere else that was causing the problem? Perhaps on my next site I'll try it again using the newer update. Thanks, I appreciate your responses!
moosh replied on at Permalink Reply

I've got the same error for form block and mail service "Core::make('mail')"

Any fix ?

athomas5 replied on at Permalink Reply
I'm not receiving messages via the conversation block either. Adding to the conversation works great...just not getting notified even though we have two contacts/emails setup to be notified.
MrKDilkington replied on at Permalink Reply

In the dashboard Email settings, are you using "Default PHP Mail Function" or "External SMTP Server"?
Dashboard > System & Settings > Email > SMTP Method

Have you tested your e-mail settings?
Dashboard > System & Settings > Email > SMTP Method > Test Mail Settings