

If this is disabled in the configuration file, all the users will receive “ 554 5.7.1 : Relay access denied“. So, if we notice ALL of the mail server users getting this error, we immediately check the user authentication settings of mail server.įor example, in Postfix mail server, the below setting enables SMTP authentication. User authentication system could be brokenĪll modern mail servers have a way to authenticate a user before it accepts a mail to be sent. Here are a few reasons we’ve noticed, and how we resolve them:ġ.

It looks something like this: Jan 23 03:10:57 mysev postfix/smtpd: NOQUEUE: reject: RCPT from : 554 5.7.1 : Relay access denied from= to= proto=ESMTP helo= In either case, we’ve seen the error recorded in mail server logs.
#Server settings for att mail pro
Pro Tip : If mails to several mail servers are bouncing, the mail server’s configuration could be incorrect. So, if a website owner has started seeing these errors after a recent config change, or migration, or new server setup, we check the MX configuration of the domain and resolve any errors in that. The mail delivery will be attempted again later. 454 4.7.1 Relay Access Denied – This error is seen in server logs when the recipient server is temporarily unable to accept mails.554 5.7.1 Relay Access Denied – The recipient’s mail server logs show this error when a mail is rejected.We’ve seen two variations of this error in web hosting servers:


#Server settings for att mail password
If either one of these servers reject the mail, a Relay Access Denied error is shown to the sender.Įvery mail server requires its users to provide a username and password to send mails. Here, TWO servers are involved – Sender’s MX and Recipient’s MX. Then it’s RELAYED to the recipient’s MX, and from there to the recipient. When a mail is sent, it first goes to the sender’s mail server (aka MX). How we prevent this error in our customer’s (eg.‘554 5.7.1 : Relay access denied’ error means that either the sender has failed security checks or the recipient’s mail server is misconfigured, and today, we’ll take a look at: In our role as Website Support Specialists for online businesses, we resolve hundreds of email issues every day.Ī commonly encountered email bounce error faced by web hosts, website owners and server owners is:
