Hi there, I have such a problem sending emails. SMTP is enabled. Please any solution? Thank you 
config.php
	
	
	
		
Erroe message :
	
	
	
		
Stack trace
	
	
	
		
Request state
	
	
	
		
	
		
			
		
		
	
			
			config.php
		Code:
	
	$config['enableMail'] = true;
	Erroe message :
		Code:
	
	     Swift_TransportException: Email to [email protected] failed: Expected response code 354 but got code "550", with message "550 5.7.1 Command rejected " src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php:383
	Stack trace
		Code:
	
	#0 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(281): Swift_Transport_AbstractSmtpTransport->_assertResponseCode('550 5.7.1 Comma...', Array)
#1 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/EsmtpTransport.php(270): Swift_Transport_AbstractSmtpTransport->executeCommand('DATA
', Array, Array)
#2 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(319): Swift_Transport_EsmtpTransport->executeCommand('DATA
', Array)
#3 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(427): Swift_Transport_AbstractSmtpTransport->_doDataCommand()
#4 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(444): Swift_Transport_AbstractSmtpTransport->_doMailTransaction(Object(Swift_Message), 'forum+4bb9f14b+...', Array, Array)
#5 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(176): Swift_Transport_AbstractSmtpTransport->_sendTo(Object(Swift_Message), 'forum+4bb9f14b+...', Array, Array)
#6 src/XF/Mail/Mailer.php(292): Swift_Transport_AbstractSmtpTransport->send(Object(Swift_Message), Array)
#7 src/XF/Mail/Queue.php(138): XF\Mail\Mailer->send(Object(Swift_Message), Object(Swift_SmtpTransport), Array)
#8 src/XF/Job/MailQueue.php(12): XF\Mail\Queue->run(G)
#9 src/XF/Job/Manager.php(253): XF\Job\MailQueue->run(G)
#10 src/XF/Job/Manager.php(195): XF\Job\Manager->runJobInternal(Array, G)
#11 src/XF/Job/Manager.php(79): XF\Job\Manager->runJobEntry(Array, G)
#12 job.php(42): XF\Job\Manager->runQueue(false, 8)
#13 {main}
	Request state
		Code:
	
	array(4) {
  ["url"] => string(8) "/job.php"
  ["referrer"] => string(46) "https://forum.elektrolab.eu/admin.php?add-ons/"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}