A hiba üzenet: 
 
	host gmail-smtp-in.l.google.com[172.217.218.27] said: 
	    550-5.7.26 This mail has been blocked because the sender is 
	    unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate with 
	    either SPF or DKIM. 550-5.7.26  550-5.7.26  Authentication results: 
	    550-5.7.26  DKIM = did not pass 550-5.7.26  SPF 
	    [polghivtengelic.t-online.hu] with ip: [84.2.227.137] = did not 550-5.7.26 
	    pass 550-5.7.26  550-5.7.26  For instructions on setting up authentication, 
	    go to 550 5.7.26 
	    https://support.google.com/mail/answer/81126#authentication 
	    n27-20020a170906089b00b00a35ed50c3b6si1650494eje.1007 - gsmtp (in reply to 
	    end of DATA command)