Toggle navigation Home Store Browse All ----- Webhosting Domains Quotation (Webdesign Services) eMail Hosting SEO- Search Engine Optimisation GRAPHIC DESIGN Dedicated/ VPS Webhosting BULKSMS Mobi Applications Website Maintenance Register a New Domain Transfer Domains to Us Announcements Knowledgebase Network Status Affiliates Contact Us Account Login Register ----- Forgot Password? Categories 9 CGI Scripts 34 Databases 28 Dedicated Servers 1 DNS 15 Domains 5 eCommerce 79 eMails 27 FTP 1 General Issues 1 MX Records 1 Nameservers 28 Other 104 Scripting 254 Web Hosting Control Panel 9 Web Resources 8 Web Stats & Logs 11 Web Tools 8 Website Help and Diagnostics 4 Windows Hosting Categories CGI Scripts (9) Databases (34) Dedicated Servers (28) DNS (1) Domains (15) eCommerce (5) eMails (79) FTP (27) General Issues (1) MX Records (1) Nameservers (1) Other (28) Scripting (104) Web Hosting Control Panel (254) Web Resources (9) Web Stats & Logs (8) Web Tools (11) Website Help and Diagnostics (8) Windows Hosting (4) [EML1.16] 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 BT 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? Yes No Print this Article Also Read [EML1.19] How do I recover deleted mail in Exchange? To recover mail that has been removed from the 'Deleted Items' folder in your mailbox, follow the... [EML1.09] I am unable to connect to the mail server. Outlook is showing error 0x80042108? This is a common error code from Outlook which can be caused by the following :• There are... [EML1.06] Why do I get a '550 Relay Not Permitted' error message when sending mail? In order to send mail through our mail servers, your email client must be configured to use SMTP... [EML1.15] Why have my mail/folders disappeared from webmail? Occasionally, the thread view in Webmail will make emails apparently disappear - if you disable... [EML1.05] Why does my email bounce with '550 relay not permitted'? This usually happens because the nameservers on the affected domain have been changed to make the... Support My Support Tickets Announcements Knowledgebase Downloads Network Status Open Ticket × Close Title Loading...