[EML2.08] I'm getting a 451 Message temporarily deferred message when sending to Yahoo or BT - What does this mean?

Yahoo have extremely strict criteria for accepting email and often defer e-mail if they think that it might be spam or if they are busy - they call this 'de-prioritising email'. Unfortunately they have a very poor system that often defers perfectly acceptable email. Yahoo also run the e-mail system for other companies like BT email so you may get the message sending to BT email addresses too. 

It is widely known in the industry that Yahoo have this poor system and we always recommend that you do not use Yahoo for email purposes because of the amount of email that they block or defer. 

Please note that there is nothing that we or any other web hosting company can do about this.  Our mail servers will keep trying to deliver your message and Yahoo should eventually accept it.

Was this answer helpful?

 Print this Article

Also Read

[EML3.07] I'd like to filter out spam email, is there any way to do this?

This is possible - log into your Control Panel and select Email Configuration. In the following...

[EML4.09] What is the difference between POP3 and IMAP4 mail?

You may have noticed that with your desktop client, and our webmail facility, you are given...

[EML4.05] WebMail - Compose/Send Email

To send email via Webmail:- Log in to your account. Click New > New Email Fill in the message...

[EML2.12] My ISP is Telia. I cannot to connect to the outgoing mail server?

Symptoms: I've changed my ISP to Telia recently. Since then none of my accounts can send mail...

[EML4.27] How do I handle SPAM/UCE/UBE?

Junk mail filters use special technology to strip out junk mail before you receive it. This...