Access Denied

Access denied – Invalid HELO name (See RFC2821 4.1.1.1)

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Access denied - Invalid HELO name (See RFC2821 4.1.1.1)

If your Exim mail logs show the following error: Access denied – Invalid HELO name (See RFC2821 4.1.1.1) This means that the sending server’s HELO/EHLO hostname is invalid or misconfigured according to the SMTP protocol requirements. What is HELO / EHLO? When an email server connects to another via SMTP, it introduces itself with the … Read more

Most Common HTTP Errors

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common http errors

Have you ever tried to visit a website only to get an “Access Denied” or “Unauthorized” sign displayed on your computer or laptop screen? When you type a website into the address bar, an HTTP request is sent to the web servers as a status code. The HyperText Transfer Protocol (HTTP) then follows a set … Read more