![]() Whether through a compromise or poor handling of emails, Google may block these messages and deem that the server has a poor reputation. There are cases where domains hosted on a server may start sending unsolicited emails. Has your server been sending unsolicited emails? If your domain uses external nameservers, you could use the records from this interface and add them to your DNS Zone File. The interface shows the intended SPF and DKIM record for your domain name, and leave for you to install it. If your domain points to your cPanel server, you can review the " Email Deliverability" interface within the user's cPanel account. To best protect our users from spam, the\n550-5.7.1 message has been blocked. Click one of the buttons below to expand and display instructions to use the QR ( Quick Response) Code or Manual Entry to configure 2FA. Click the Set Up Two-Factor Authentication button to proceed. 17:16:13 1xxXxX-000XX-Xx ** R=dkim_lookuphost T=dkim_remote_smtp H=gmail-smtp-in.l. X=TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128 CV=yes: SMTP error from remote mail server after end of data: 550-5.7.1 This message does not have authentication information or fails to pass\n550-5.7.1 authentication checks. Click on the Two-Factor Authentication icon. An example of an error that you may receive in your Exim Logs due to authentication would be: Google generally requires working SPF and DKIM records on your domain name. ![]() Our documentation on Firewall Management provides some suggestions, or the hosting provider of your server could assist.ĭoes your domain have valid SPF and DKIM records? If the connection to gmail-smtp-in.l. times out, then we recommend reviewing whether or not the port 25 is open on your server. To test whether or not port 25 is open, you could utilize the telnet utility: It is common for hosting providers to limit traffic on port 25. If the domain sends messages to spam, please see the section regarding "Has your server been sending unsolicited emails?". When sending emails to Gmail for testing, review whether or not emails from your domain or server address the Inbox or Spam folder. There are some common issues that you may experience when first sending emails to Gmail from your cPanel Server.
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