No longer able to submit articles via email

Perhaps, but since I updated to WP6.0.3, I can no longer post emails via Postie.
I have removed the restrictions on who can post and set it to allow anyone to post, but it still won’t post.

At the same time, a significant amount of “tmptitle” draft posts are being generated.
The article has not been posted, but the images included in the email have been loaded into WP. Moreover, the same images have been duplicated in fairly large numbers.