Solution for Relay Access Denied error on the user side.įirst of all, you should ask your email service provider for assistance and verify your email settings with them.

DNS MX records are pointing to the wrong server.

Recipient’s email is invalid/inactive/cancelled.

SMTP authentication settings are disabled.

The most common misconfigurations on recipient’s MX are:

Recipient’s MX doesn’t have any misconfigurations.

The Sender’s MX passed all security checks/spam filters.

If the email was successfully sent from Sender’s MX, then the issue might appear with the recipient’s MX. Sometimes it happens even with trustworthy email users if they forget to turn on auth in their mail clients. Why does it happen? Such precaution is done to keep the spammers out, so they aren’t able to send mail using your server without proper credentials. If your MX won’t be able to successfully authenticate you before sending the email, then it will deny the email from being relayed on to the recipient’s MX. Case 1 – Sender’s MX rejects the emailīefore the actual sending of the email, MX of the sender asks to provide a username and password to send emails. If one of these servers rejects the mail, then the sender will see the Relay Access Denied error. So there are 2 servers (aka MX) that are involved – Sender’s MX and Recipient’s MX. After that, their email server delivers email to the recipient. Then your mail server transmits it on Relays to the recipient’s email server. When you send an email, your email client forwards the email to your own mail server. Reasons for getting a relay access denied errorįirstly, let’s take a look at the whole entire process of sending an email.

The recipient’s server has determined the sender’s server to be a source of spam, or that it had failed security checks.

The sender did not authenticate to the outgoing mail server due to some misconfigurations.

The most common reasons for this error are: It indicates that the server is not letting an email to be sent to another mail server. Relay Access Denied is a rather common error. Especially in the IT industry where everything: starting from meeting schedules ending with contracts concludes, is done mostly via email. Emails are one of the most widely used ways of communication nowadays.

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