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Tag: outages

SNDS News

A number of people have mentioned over the last week or so that they’re seeing a lot of outages, failures and general ickiness with SNDS. I contacted Microsoft and asked about it. SNDS has been undergoing some upgrades and improvements and the outages were not intended to be end user visible. They’re going to keep […]

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Storms, outages and email

There’s been quite a bit of discussion about how Hurricane (Superstorm?) Sandy has affected email delivery over the last week. There are a couple things that may affect delivery at a number of domains. Receiving mailservers hosted in facilities that lost power or connectivity for one reason or another. Most of these issues seem to […]

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  • HE.net DNS problems

    Hurricane Electric had a significant outage of their authoritative DNS servers this morning, causing them to return valid responses with no results for all(?) queries. This will have caused delivery problems for any mail going to domains using HE.net DNS - which will include some of their colocation customers, as well as users of their free services - but also will have caused reverse DNS to fail for most servers hosted by Hurricane Electric worldwide, so if any of your mail is being sent from HE hosted machines you may have seen problems. (We're HE customers so we noticed. Still happy with them as a vendor.)No Comments


  • 65.0.0.0/8 DNS issues

    If you're sending email from any address beginning with a 65 - in 65.0.0.0/8 - it's possible you'll see some delivery problems. Something appears to be broken with dnssec signatures for the reverse DNS zone, leading queries for reverse DNS to fail for anyone using a dnssec aware DNS resolver (which is almost everyone).1 Comment


  • Our green bar certificate is going away

    Later today we'll be switching from an Extended Validation ("green bar") SSL certificate to a Domain Validation certificate. This isn't exactly a planned change but I'm waiting for responses from Comodo before I go into it too much. I'll share some more details next week.3 Comments


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