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SMTP, SPF, DKIM, DMARC, TLS
Did you know anyone can send an email impersonating your email address? Back in 1971 when ’email’ was invented and later when it was connected to the Internet both email users knew each other. Since then spammers and other bad actors started to abuse this ‘feature’. And since then some new mechanisms have been added…
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DKIM and subaddressing added to 25mail.st
We have added a couple of features to the 25mail.st service. First, we now support DKIM email signing. This lets our email servers sign outgoing messages so that recipients can verify that the email was sent from an authorized server. You will need to add a DNS entry for each email domain wishing to have…
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Setting up Domains Keys (DKIM) on Postfix
This is a quick and fairly painless way of setting up DKIM, on a postfix server. DomainKeys Identified Mail (DKIM) is a method for associating a domain name to an email message, thereby allowing a person, role, or organization to claim some responsibility for the message and helps verify that your mail is legitimate. This…