I get this error a few times I send out emails. I think this is due to a member trying to unsubscribe.

Anyone knowing how to handle this?

Error Bulk mail Guest?

Check Your Moderator CP - IP Address tools for this IP  (74.217.90.250)

 

We can (naturally) only email to our members. I think this error is triggered when a member that received an email clicks the "unsubscribe link" without being logged in.

In my adminCP error log I see the following post (photo 1 below).

Of note, when I click on the URL there, I get a "Succesfully Unsubscribed" page (photo 2 below).

 

When a Bulk mail recipient clicks Unsubscribe, this feature is executed by its default browser.
In my tests I use the Chrome browser and everything is OK.
Ask your user with this error / with his IP you will find out who this user is / - who is his default browser and version.
There may be a issue with a browser or browser version.

I would recommend submitting a ticket so we can take a look.