Is there a way of checking whether a specific instance is blocking the instance I am on? I have a strong suspicion one person I was trying to communicate with does not see my toots, but I don't know of a way of checking this.
@timorl Instances that block us often brag about it. If it's a Mastodon instance, check their /about/more page near the bottom. If Pleroma, it's sometimes on the /about page.