May I add my experience with tis issue.
I am running 3.4.2, with the latest version of Postie, which I updated today. I have been running an older version and successfully receiving text emails with attachments, which posted automatically to Postie, without issue. The last one I had was about 3 weeks ago.
In the last 6 weeks or so, I have not updated any plugins or anything else technically. Posts worked automatically and successfully.
However, in the last 3 weeks, the automation stopped (even though the blog was being visited), and worse: any posts with images were posted (pending) with only the title and the images– the text was totally stripped. However, pure text posts, without images were posted intact.
But none were automated. I wondered why I had no posts from my collaborator who is posting from mid-Pacific; today when I did a manual check, there were 13 posts, from the last 4 weeks.
Something has changed… hmmm!
Moreover… 2 test posts, sent today from London & the Galapagos, to the Postie address did not even arrive… my next step is to check with my host if they can track anything.
Peter