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Why do I get the error '553, sorry that domain isn't in my list of allowed rcpthosts' when I send mail?




The error ‘553, sorry that domain isn't in my list of allowed rcpthosts’ occurs if you are not authenticating with our outgoing mail server. To ensure you are authenticating, please see the related articles on how to configure your email client:

How do I configure my mail account in Entourage?

How do I configure my mail account in Microsoft Office Outlook 2007?

How do I configure my mail account in Microsoft Outlook Express?

How do I configure my mail account in Microsoft Windows Mail?

How do I configure my mail account in Mozilla Thunderbird?



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