2010/01/01 by Maarten Oelering.
Interspire bounce processing add-on for PowerMTA
Interspire is perhaps the most popular email marketing tool. Used with PowerMTA, it becomes a powerful and complete email solution. But the two were not integrated with regard to bounce processing. Until now. Postmastery regularly set up turn-key email systems based on Interspire and PowerMTA. The systems were complemented by a POP/IMAP server so bounce […]
2010/01/01 by Maarten Oelering.
DKIM recipe for PowerMTA
DomainKeys, and it’s successor DKIM, are important email authentication techniques. Based on cryptography, they are more secure than SPF and Sender ID. With DomainKeys/DKIM the integrity of the content is also protected and authentication does not break when emails are being forwarded. DomainKeys/DKIM is used by large webmail providers such as Google, Yahoo and AOL. […]
2010/01/01 by Maarten Oelering.
Hotmail throttling and PowerMTA
Windows Live Hotmail is famous for throttling senders based on their IP reputation. The following two SMTP errors might be familiar: 421 PR(ct1) The mail server IP connecting to Windows Live Hotmail server has exceeded the connection limit allowed. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help. For […]