Yes -- this is security software following links in email messages,
looking for malware. Microsoft, Barracuda and many others do it.
Microsoft can provide a bit of guidance on certain types of URLs that
they will not follow; but that's only them, and it's a bit of an arms
race type scenario.
What you really need is to go from a one-click unsub to a two-click unsub.
https://www.spamresource.com/2022/02/lets-talk-all-about-unsubscribes.html
Cheers,
Al Iverson
On Tue, Mar 8, 2022 at 2:23 PM Brian Toresdahl via mailop
<mailop@mailop.org> wrote:
>
> We've been experiencing cases of apparent automatic unsubscribes, but I'm not
> familiar with the source of this, and am hoping someone here can recognize
> the reason for the behavior.
>
> We're an email service provider, used primarily in corporate settings, for
> sending e-gifts (e.g. Starbucks gift cards). Consent and a prior email
> relationship does exist between sender/recipient.
>
> What we've seen, corroborated with cases across different sender domains, and
> different recipient domains, is that emails, as soon as they're delivered,
> are being immediately unsubscribed. We've had enough independent reports from
> recipients that they didn't unsubscribe themselves to make me believe them.
> We've had cases where senders and recipients are on the phone, together, with
> the recipient actively trying to resubscribe, but each retry is again
> unsubscribed. So it's like some automated system is unsubscribing recipients
> against their consent.
>
> The one pattern we've noticed is that the recipient domains have a common MX,
> something like {recipient.domain}.mail.protection.outlook.com. But it's not
> across all such recipient domains, just a handful.
>
> This leads me to believe there is some local admin setting available for
> mail.protection.outlook.com, allowing admins to enable some sort of
> "auto-unsubscribe" rule for emails matching some pattern.
>
> If this is the case, then that sounds like a corporate policy, and I would be
> unable to affect a different outcome from the sender side, or individual
> recipient side. I can respect this -- their server, their rules, etc -- I
> just want to accurately communicate what's happening to my users.
>
> Am I understanding the issue correctly here?
>
> I did raise a ticket with Microsoft's Postmaster support, SR1536619994, but
> have not received any useful communication.
>
> --
>
> Brian
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--
Al Iverson / Deliverability blogging at www.spamresource.com
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