PhpMailer SMTP Error

lukas4444

• October 06, 2016 03:41

Hello, since today morning, i always receive this message when sending something via PHPmailer: SMTP Error: Could not authenticate. It seems there was an update, and now it is no longer working. I am using a seperate server to connect to and sending all emails: $data['smtp">['host"> = '51.255.XX.XX'; $data['smtp">['port"> = '25'; $data['smtp">['username"> = 'XX@domain.com'; $data['smtp">['password"> = 'password'; However there is a time out everytime. Last time, some months ago, there has been also an update. I had to whitelist (Exim Configuratin) the other servers IP address (from which im sending) to get this to work again. I also checked the server (which sends emails) log file. And there is a connection: SMTP connection from [185.66.XX.XX]:36721 (TCP/IP connection count = 1) but still it is not connecting and either sending any emails. Also tried to disable cphulk and another server (for sending the outgoing email). I have not changed anything and this was working find for a long time. So this is 100% anything security / cpanel update related issue. Maybe someone can help me out..

• 

  cPanelMichael

  • October 07, 2016 02:59

  Hello, Could you verify if "WHM Home " Security Center " SMTP Restrictions" is enabled on this system? Also, are you using any firewall applications such as CSF? If so, check to see if the "SMTP_BLOCK" option is enabled. Thank you.

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