We do not filter public channels at all so that would explain it.
You shouldn’t be seeing kind 1 spam messages though.
Discussion
Wait I removed one suspicious follower, maybe it's gone now? Thanks for your kind help!
Anytime! We do plan on adding some basic spam filtering to our aggregator relay soon which should further help with this.
What are your recommendations on how many relays I should use? I use only payed now...
Hard to say, depends on your desired nostr experience and bandwidth limitations.
Somewhere in the 4-6 range has been working well for me (but that includes filter so the reach is much larger). I used to have more paid relays but removed many of them because they were slowing me down. Have to experiment and find a mix of performance/reach/content that works for you. It’s complicated and unsolved but it’s what nostr is all about.