The error, "553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)", means that you areattempting to send email using the wrong smtp server.
Smtp related errors could have different numbers and slightly different wording, eg, "Relay access denied for...", but are all linked toexactly the same problem.
The smtp server that you use to send email is not determined by who hosts your email, but insteadis a service of your Internet connection provider. All ISP's provide the clientele with smtp servers, no matter their email address.
Just about the most important reasons behind doing this is really so spammers cannot connect to an unauthorized smtp server and use it to send mountains of spam. Occasionally, spammers find these "open" systems and flood all of them with mail. These systems are known as "open relays" and arethe result of careless configuration from the operator.
Clients commonly see this error once they configure their PC at the office, then try to useexactly the same configuration in their home, from where the Internet connection is supplied bysome other ISP.
The fix for this situation would be to change the smtp server inside the mail client to match the one given by the ISP.
Smtp related errors could have different numbers and slightly different wording, eg, "Relay access denied for...", but are all linked toexactly the same problem.
The smtp server that you use to send email is not determined by who hosts your email, but insteadis a service of your Internet connection provider. All ISP's provide the clientele with smtp servers, no matter their email address.
Just about the most important reasons behind doing this is really so spammers cannot connect to an unauthorized smtp server and use it to send mountains of spam. Occasionally, spammers find these "open" systems and flood all of them with mail. These systems are known as "open relays" and arethe result of careless configuration from the operator.
Clients commonly see this error once they configure their PC at the office, then try to useexactly the same configuration in their home, from where the Internet connection is supplied bysome other ISP.
The fix for this situation would be to change the smtp server inside the mail client to match the one given by the ISP.
