We just released a new patch which fixes an important federation problem. Due to a mistake in the code, activities were only sent out once, even if delivery failed (e.g. because the target instance is down, or a temporary connection issue). Instance admins should definitely upgrade.
This problem is fixed, so that failed deliveries are retried up to 9 times, with exponentionally increasing intervals. The only limitation now is that it will not keep retrying after Lemmy is restarted, but that case should be less common.
https://feddit.de/post/102358
https://lemmy.ml/post/184726
this isn’t the best data but it seems like on feddit we still don’t get federated likes. Other posts are like this as well.
I’m glad to know it’s not just my instance.