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I am using the TIdSMTP but when I try to send mail I get an error message such as: "521 potserver.organization.com access denied" or "'572 Relay Not Authorized." |
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It means that you have been denied access to that SMTP server by its administrator. Administrators prevent abuses of their SMTP relay servers by requiring:
| • | That you send E-Mail only from a computer connected to their network. |
| • | That you use some type of authentication. |
Talk to the server's administrator and ask what are the requirements for connecting to the server. Sometimes, the server may need to be reconfigured.