Stop campaign while sending

I have a campaign and added too many email addresses to the segment it is watching because of a wrong filter.

It looks like that the campaign stops sending emails when I unpublish the campaign, which is what I want.

Now I’ve removed the contacts from the segment and I’ve published the campaign again, but it looks like mails are being send again.

Is there some kind of queue that is still filled with emails?

I have a campaign and added too many email addresses to the segment it is watching because of a wrong filter.
It looks like that the campaign stops sending emails when I unpublish the campaign, which is what I want.
Now I’ve removed the contacts from the segment and I’ve published the campaign again, but it looks like mails are being send again.
Is there some kind of queue that is still filled with emails?