Typically, if this happens you will see the remote mailserver indicating the reason for the rejection in the \MDaemon\Logs\MDaemon-YYYYMMDD-SMTP(out).log like the example below:
Founded in 1552, Bedford School is an independent boarding and day school for boys aged 7 to 18 years, where fundamental traditions combine with innovative educational thinking to provide a challenging environment. ZEN SOFTWARE LIMITED - Free company information from Companies House including registered office address, filing history, accounts, annual return, officers. In many cases, if the checks in steps 2 and/or 3 fail the remote mail server will refuse to accept the email you are attempting to deliver to it. Posted at 10:52h in MDaemon by Neil Perry.
The remote mail server will perform a lookup on that hostname to confirm it resolves back to the IP address that is connecting to it. The remote mail server will process the connection and perform a reverse DNS lookup on your public IP address to see if it resolves to a hostname.ģ. MDaemon is a reliable and secure mail server that does not require expensive administration or impose high per-user costs. Your MDaemon server will establish a SMTP connection with a remote mailserver in order to deliver an email to them.Ģ. MDaemon ( pronounced M-Day-mon) is one of the most widely used mail servers in the world, trusted by customers in over 90 countries to meet the needs of their small to medium sized businesses. If the rDNS lookup is not successful, they typically will not accept mail that mail server.Ī rDNS check would typically take the following steps:ġ. Most ISP’s now perform reverse DNS (rDNS) lookups on mail servers connecting to them in order to check the authenticity of the mail server.