Random website bug when posting reply

When I made this post, instead of being returned to the thread I was sent to an empty page (still had the GG header) and this chunk of data:

An internal error has occurred. We apologize for the inconvenience. If this screen has appeared during a transaction, please contact support@garagegames.com. Please, do not attempt the transaction again.

exception 'Zend_Mail_Protocol_Exception' with message 'Connection timed out' in /var/www/garagegames.com/html/html/Zend/Mail/Protocol/Abstract.php:234 Stack trace: #0 /var/www/garagegames.com/html/html/Zend/Mail/Protocol/Smtp.php(167): Zend_Mail_Protocol_Abstract->_connect('tcp://smtp.post...') #1 /var/www/garagegames.com/html/html/Zend/Mail/Transport/Smtp.php(195): Zend_Mail_Protocol_Smtp->connect() #2 /var/www/garagegames.com/html/html/Zend/Mail/Transport/Abstract.php(348): Zend_Mail_Transport_Smtp->_sendMail() #3 /var/www/garagegames.com/html/html/Zend/Mail.php(973): Zend_Mail_Transport_Abstract->send(Object(Zend_Mail)) #4 /var/www/garagegames.com/html/application/default/models/Mail.php(1080): Zend_Mail->send(Object(Zend_Mail_Transport_Smtp)) #5 /var/www/garagegames.com/html/application/default/models/Mail.php(607): Mail::sendPostmark('davidb@garagega...', 'David Montgomer...', 'GarageGames.com...', 'Luis E Pabon re...', 'webmaster@garag...', 'GarageGames For...') #6 /var/www/garagegames.com/html/application/default/models/ForumThreadModel.php(209): Mail::sendThreadNotificationMessage(Object(AccountModel), Object(ForumThreadModel), Object(AccountModel), Object(ForumReplyModel)) #7 /var/www/garagegames.com/html/application/default/controllers/CommunityController.php(1105): ForumThreadModel->addReply(Array) #8 /var/www/garagegames.com/html/html/Zend/Controller/Action.php(513): CommunityController->viewthreadAction() #9 /var/www/garagegames.com/html/html/Zend/Controller/Dispatcher/Standard.php(289): Zend_Controller_Action->dispatch('viewthreadActio...') #10 /var/www/garagegames.com/html/html/Zend/Controller/Front.php(946): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #11 /var/www/garagegames.com/html/html/index.php(179): Zend_Controller_Front->dispatch() #12 {main}