Hi, I am using the "relay for users only" but it seems not to work properly, cause my IP its in the ORDB.org saying that my server is working with an open mail relay, does anyone have the same problem I will appreciate any info on the subject
The problem is that you are using IMail v7, which happily let people be an open relay without letting them know. "Relay for users" means "Relay for anyone who claims to be a user on your server, whether or not they actually are."
IMail's SMTP Security options have a number of relaying choices. Of them, only 2 can be used safely (the rest cause you to be an open relay). The two safe options are "Relay for Addresses" and "No Mail Relay".
If you use IMail's "Relay for addresses", you would enter a list of "safe" IP addresses that your users may come from; anyone not coming from those safe IPs would need to use SMTP AUTH. If you use "No mail relay", everyone must use SMTP AUTH to relay mail. Note that relay settings apply only to outgoing E-mail, so no matter what your settings are, your users will still be able to get mail.
-Scott
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