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What does Relaying Denied mean?
This question is about an error you may get when trying to send an email. The error has many forms but they all mean the same thing. Here are the most common forms:
- Relaying Denied
- Relay Not Allowed
- Relaying is Prohibited
- We do not relay
- Unable to relay
This error is a very common error which comes from the mail server you are trying to send email through. Your mail server has an unsolicited email (SPAM) protection scheme enabled which is giving you this error. In the most general cases, a mail server will not allow you to send email through it if it does not "know" either the To or the From email address. What I mean by "know", is a mail server "knows" an email address if the email account for that email address is in that mail servers configuration files. Another way to put it is a mail server named "mail.dinosaur.com" would "know" the email address "firstname.lastname@example.org", but would not "know" the email address "email@example.com".
Since the most common use of SMTPit is to send email to someone on the internet (instead of someone on your local mail server), the To email address is most likely not going to be "known" by your mail server. So, the first place to check in your database is what you are using as a From email address. Make sure that you are using a From email address that is associated with the SMTP Host you are connecting to (and that everything is spelled correctly).
If everything is correct, then there are some other things you can try. Some mail servers are a little more sophisticated than this and require extra things from you to make sure that you are allowed to send email. This is usually in the form of authenticating or "logging in" to your mail server. SMTPit Pro and classic SMTPit 3.0 have the ability to authenticate with your mail server. All you have to do is set the Authentication Type to something other than "None" and fill in your username and password. If you do not know the authentication type, you can either use the "Auto" type (only in SMTPit Pro), or contact your mail server administrator to find out the correct settings. After authenticating with your mail server, it should allow you to send email.