ISPmail Buster


Now this is a feature that caused me quite some headache. But in the end it was pretty simple. Quotas are size limits for users. You can make sure that users do not waste infinite amounts of disk space but are forced to clean up old emails every now and then. The magic happens in […]

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DNS records

MX entries So now you have your working mail server. But how do other mail servers get to know you? The answer lies in the most important service on the internet: DNS. Assume that a mail server somewhere on the other end of the internet wants to send an email to The server must

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