Posts Tagged ‘Sender Policy Framework’

Announcing Service Window: Updates to Kolab..

Posted on: July 29th, 2021 by

This Saturday, 31st of July 2021 at 08:00 UTC, the Kolab Now operations team will perform an update of the Kolab dashboard software on the Kolab Now platform.

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Junk Email Filter.com is Junk

Posted on: October 16th, 2017 by

We’re dropping our use of junkemailfilter.com “Spam DNS Lists”, because we have few positive experiences with it. Frankly, it is Junk.

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A Stricter DMARC Policy, Part II

Posted on: October 9th, 2017 by

Last month, we let you know a stricter DMARC policy was being applied to Kolab Now infrastructure. With a primary aim to increase our reputation and decrease phishing attempts from clearly false senders, we’ve since learned about some secondary effects;

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A Stricter DMARC Policy

Posted on: September 26th, 2017 by

Sometimes, we receive reports that either our general reputation has declined to the point that certain receiving parties will block some of the email sent through our infrastructure, and that bothers us — because it bothers our customers. This usually involves just a limited number of messages, but is annoying nonetheless.

Other times we receive reports of phishing. These usually do not include verbiage that is suitable for repeating in this here blog, as the reports reply to messages do not originate from us, usually refer to external, third party sites but are most importantly also not submitted through our infrastructure. We follow up these occurrences with abuse reports to web server hosting companies, email providers and through other associated channels, but responses are often not thorough and not quick.

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