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Tag: filters

Abuse it and lose it

Last week I blogged about the changes at ISPs that make “ISP Relations” harder for many senders. But it’s not just ISPs that are making it a little more difficult to get answers to questions, some spam filtering companies are pulling back on offering support to senders. For instance, Cloudmark sent out an email to […]

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Thoughts on “ISP relations”

I’ve been thinking a lot about the field of ISP relations and what it means and what it actually is. A few years ago the answer was pretty simple. ISP relations is about knowing the right people at ISPs in order to get blocks lifted. The fact that ISPs had staff just to deal with […]

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Looking for message labs help?

There’s a common bounce error from the Message Labs’ filtering appliance that goes no where. 501 Connection rejected by policy [7.7] please visit www.messagelabs.com/support If you’re trying to troubleshoot a delivery problem and you find any reference to www.messagelabs.com/support, try http://www.symanteccloud.com/supportcentre/information/r_troublshooting instead. That link provides a little more information.

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Changes at Spamcop

Earlier this week some ESPs started asking if other ESPs have seen an uptick in Spamcop listings. The overwhelming answer (9 of 11 ESP representatives) said yes. I’ve also had clients start to ask me about Spamcop listings. All in all, there seems to be some changes at Spamcop that means more senders are showing […]

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Barracuda clicking all links in emails

A number of people have asked me recently if I know anything about appliances clicking all the links in emails. Some of those people have asked specifically about Barracuda, some have just asked if I knew of any filters that clicked links. The answer is, yes, there are cases where spam filters have followed all […]

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Uploading your address book to social media

I am one of the moderators of a discussion list working on a document about getting off blocklists. If anyone not on the list attempts to post to the list I get a moderation request. One came through while I was gone. Now, I don’t really think Jim Mills wants to be friends with a […]

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Filtering is not just about spam

A lot of filters started out just as filters against spam. But over the years they’ve morphed into more general blocks against dangerous or problematic email. There’s a lot of crime and bad behavior on the internet, much of it using email as a conduit or vector. Filtering is so much more than stopping spam […]

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TWSD: Adapt to filters

This morning the new Yahoo! CEO posted about changes to Yahoo! mail. I logged into one of my Yahoo accounts to check and see if I had access to the new Yahoo! mail client yet. I don’t, but I did notice that spammers have adapted to the new Yahoo model of disabling filters in the […]

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Check your unsubscribe process

When was the last time you actually tried to unsubscribe from one of your mailing lists? Have you ever even checked to see that your process works? For whatever reason, unsubscribe processes don’t always work. Sometimes the problem is on the client end. Sometimes the problem is on the ESP end. But in either case, […]

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You can’t technical yourself out of delivery problems

In many cases these days, many more cases than a lot of senders want to admit, delivery problems at the big ISPs are a result of sending mail recipients just don’t care about. The reason your mail is going to bulk? It’s not because you have minor problems in your headers. It’s not because you […]

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  • AOL compromise

    Lots of reports today of a security problem at AOL where accounts are sending spam, or are being spoofed in spam runs or something. Details are hazy, but there seems to be quite a bit of noise surrounding this incident. AOL hasn't provided any information as of yet as to what is going on.4 Comments


  • ReturnPath on DMARC+Yahoo

    Over at ReturnPath Christine has an excellent non-technical summary of the DMARC+Yahoo situation, along with some solid recommendations for what actions you might take to avoid the operational problems it can cause.No Comments


  • AOL problems

    Lots of people are reporting ongoing (RTR:GE) messages from AOL today.  This indicates the AOL mail servers are having problems and can't accept mail. This has nothing to do with spam, filtering or malicious email. This is simply their servers aren't functioning as well as they should be and so AOL can't accept all the mail thrown at them. These types of blocks resolve themselves. 1 Comment


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