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Tag: Blocklisting

Weird Lashback listings

I’m seeing some reports from various ESP folks that they’re experiencing an increase in Lashback listings the last day or so. They have contacted and are working with Lashback to identify what might be going on, if anything. I’ll update once I know more and have permission to share.

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Some email related news

A couple links to relevant things that are happening in email. M3AAWG released the Help! I’m on a Blocklist! (PDF link) doc this week. This is the result of 4 years worth of work by a whole lot of people at M3AAWG. I was a part of the working group (“doc champion” in M3AAWG parlance) […]

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Questions about Spamhaus

I have gotten a lot of questions about Spamhaus since I’ve been talking about them on the blog and on various mailing lists. Those questions can be condensed and summed up into a single thought. What engagement metrics should I monitor to avoid a Spamhaus listing? First off Spamhaus doesn’t care about about engagement. Spamhaus […]

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Dealing with blacklists

Al has a good post listing the top 5 things senders should remember when dealing with blacklists. One of the critical things to remember about blocklists is that they are an early warning sign. Sure, some of them are one crank and his cat and will not hurt your overall delivery. A sender may be […]

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Links for 7/8/9

With all the traveling I did last month, I’m still not back to full blogging speed. I have been slowly reading through the backlog of unread posts from my RSS feeds and there was lots of good stuff published. Three myths about DKIM by John Levine. A very good explanation taking down some of the […]

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Winning friends and removing blocks

I do a lot of negotiating with blocklists and ISPs on behalf of my clients and recently was dealing with two incidents. What made this so interesting to me was how differently the clients approached the negotiations. In one case, a client had a spammer slip onto their system. As a result the client was […]

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Results based email marketing

Two articles showed up in my RSS feed in the last 24 articles that touched on different aspects of the same issue. Senders should improve their email marketing program even when they are working well. Stephanie Miller over at ReturnPath addresses the lost revenue from current programs. Consider that if we can earn a nearly […]

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Followup to EEC spamming

Ken has a followup to his article last week about the EEC spamming. Multiple e-mails obtained by this newsletter clearly show VIV was prospecting the EEC member list from its servers in violation of the EEC’s own privacy policy. […] Moreover, one reader sent this newsletter two separate free issues of two different editions of […]

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Postini bug

Ben over at MailChimp has an article talking about a recent experience with Postini and an actual bug that causes Postini to interact badly with another spamfilter and block non-spam.

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More on spamfiltering feedback

Al wrote a post commenting on my post from last Thursday on spamfilters talking to senders who are being filtered. I think his take on it is close to mine. I would point out that Google has a pretty opaque system and no feedback to senders, but a lot of people seem to think their […]

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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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