Last year a number of ISPs mentioned the Black Friday email volume was congesting their systems and causing delays. While anecdotally it seems that volume is up over last year I also haven’t heard any ISPs talking about congestion. Likewise, most of the delivery folks I’ve spoken too today and over the weekend are saying there were no major problems.
How’d the busiest email weekend of the year work for all of you?
I recently saw a question from an ESP rep asking if anyone had a personal contact at a particular ISP. The problem was that they had a rejection from the ISP saying: 571 5.7.1 too many recipients this session. The ESP was looking for someone at the ISP in order to ask what the problem was.
This is exactly the kind of behaviour that drives ISPs bonkers about senders. The ISP has sent a perfectly understandable rejection: “5.7.1: too many recipients this session.” And instead of spending some time and energy on the sender side troubleshooting, instead of spending some of their own money to work out what’s going on, they fall back on asking the ISPs to explain what they should do differently.
What, exactly, should you do differently? Stop sending so many recipients in a single session. This is not rocket science. The ISP tells you exactly what you need to do differently, and your first reaction is to attempt to mail postmaster@ the ISP and then, when that bounces, your next step is to look for a personal contact?
No. No. No.
Look, connections and addresses per connections is one of the absolute easiest things to troubleshoot. Fire up a shell, telnet to port 25 on the recipient server, and do a hand SMTP session, count the number of receipts. Sure, in some corporate situations it can be a PITA to do, sometimes you’re going to need to get it done from a particular IP which may be an interface on an appliance and doesn’t have telnet or whatever. But, y’know what? That Is Your Job. If your company isn’t able to do it, well, please tell me so I can stop recommending that as an ESP. Companies have to be able to test and troubleshoot their own networks.
Senders have been begging ISPs for years “just tell us what you want and we’ll bother you less.” In this case the ISP was extremely clear about what they want: they want fewer recipients per connection. But the ESP delivery person is still looking for a contact so they can talk to the ISP to understand it better.
This is why the ISPs get so annoyed with senders. They’re tired of having to do the sender’s job.
There’s been an explosion of “Google plugins” that facilitate spam through Gmail and G Suite. They have a similar set of features. Most of these features act to protect the spammer from spam filtering and the poor reputation that comes from purchasing lists and incessantly spamming targets. Some of these plugins have all the features of a full fledged ESP, except a SMTP server and a compliance / deliverability team.
I’ll give the folks creating these programs credit. They identified that the marketers want a way to send mail to purchased lists. But ESPs with good deliverability and reputations don’t allow purchased lists. ESPs that do allow purchased lists often have horrible delivery problems. Enter the spam enabling programs.
From the outside, the folks creating these programs have a design goal to permit spam without the negatives. What do I mean? I mean that the program feature set creates an environment where users can send spam without affect the rest of their mail.
The primary way the software prevents spam blocking is using Google, Amazon or Office 365 as their outbound mail server. Let’s be frank, these systems carry enough real mail, they’re unlikely to be widely blocked. These ISPs are also not geared up to deal with compliance the same way ESPs or consumer providers are.
There seem to be more and more of these companies around. I first learned of them when I started getting a lot of spam from vaguely legitimate companies through google mail servers. Some of them were even kind enough to inform me they were using Gmail as their marketing strategy.
I didn’t realize quite how big this space was, though. And it does seem to be getting even bigger.
Then a vendor in the space reached out looking for delivery help for them and their customers. Seems they were having some challenges getting mail into some ISPs. I told them I couldn’t help. They did mention 3 or 4 names of their competitors, to help me understand their business model.
Last week, one of the companies selling this sort of software asked me if I’d provide quotes for a blog article they were writing. This blog article was about various blocklists and how their software makes it such that their customers don’t really have to worry about blocking. According to the article, even domain based blocking isn’t an issue because they recommend using a domain completely separate from their actual domain. I declined to participate. I did spend a little time on their website just to see what they were doing.
This morning a vendor in the space joined one of the email slack channels I participate in asking for feedback on their software. Again, they provide software so companies can send spam through google outbound IPs. Discussions with the vendor made it clear that they take zero responsibility for how their software is used.
I don’t actually expect that even naming and shaming these companies facilitating spam will do anything to change their minds. They don’t care about the email ecosystem or how annoying their customers are. About the best they could do is accept opt-out requests from those of us who really don’t want to be bothered by their customers. Even that won’t really help, even domain based opt-outs are ineffective.
What needs to happen is companies like Google, Amazon and Microsoft need to step up and enforce their anti-spam policies.
Return Path recently announced changes to their certification program. They will no longer be certifying 3rd party mailers.
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