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Protecting your cPanel/WHM server from SSLv3 POODLE vulnerability
UPDATE 17th Oct - Some browsers like Firefox and IE 6 are reporting issues when SSLv3 is disabled. Fortunately, SSLv3 fix is available from OpenSSL, and major distros would soon be putting it to their repos. SSLv3 disabling can soon be done in a phased manner. Check...
How to resolve “550 Access denied – Invalid HELO name” error from Outlook (0x800ccc78), Windows Mail, etc in ZPanel Postfix mail servers
The mail user reports the error: Task [email protected] – Sending reported error (0x800CCC78): ‘Cannot send the message. Verify the email address in your account properties. The server responded: 550 Access denied – Invalid HELO name (See RFC2821 4.1.1.1) Corresponding...
How to resolve “550 Access denied Virtualmin/Webmin Postfix mail servers
The mail user reports the error: Task [email protected] – Sending reported error (0x800CCC78): ‘Cannot send the message. Verify the email address in your account properties. The server responded: 550 Access denied – Invalid HELO name (See RFC2821 4.1.1.1) Corresponding...
How to resolve “550 Access denied – Invalid HELO name” error from Outlook (0x800ccc78), Windows Mail, etc in InterWorx Postfix mail servers
The mail user reports the error: Task [email protected] – Sending reported error (0x800CCC78): ‘Cannot send the message. Verify the email address in your account properties. The server responded: 550 Access denied – Invalid HELO name (See RFC2821 4.1.1.1) Corresponding...
How to resolve “550 Access denied – Invalid HELO name” error from Outlook (0x800ccc78), Windows Mail, etc in DirectAdmin Exim mail servers
The mail user reports the error: Task [email protected] – Sending reported error (0x800CCC78): ‘Cannot send the message. Verify the email address in your account properties. The server responded: 550 Access denied – Invalid HELO name (See RFC2821 4.1.1.1) Corresponding...
Fix “550 Access denied in Parallels Plesk Postfix mail servers
The mail user reports the error: Task [email protected] – Sending reported error (0x800CCC78): ‘Cannot send the message. Verify the email address in your account properties. The server responded: 550 Access denied – Invalid HELO name (See RFC2821 4.1.1.1) Corresponding...
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