Occasional authentication failures

Question for the Jarland bot (JarBot 1.0? JarLLM? jAIgent?) that's apparently taken over as of today.

Occasionally, I will get a connection failure, I mostly see it on my iPhone, where it will want my Mail password re-entered. If I cancel and just let it continue, it's fine. However, today I happened to be on the webmail screen - I briefly saw an orange pop-up in the lower right, it said something about a full queue and a connection failure, although it went away too quickly for me to get a picture of it or even read it completely. Possibly related?

Additional possible help diagnosing things, i'm running imapfilter hourly to do some housekeeping and once in a while that fails as well. The logs are not particularly helpful, I get a basic failed status,

imapfilter: login request to xxx@xxx.xxx@chocobo.mxrouting.net failed

And a stack trace, but the trace is not particularly helpful. It's not happening enough that it's a huge deal, but it is often enough that I thought it was worth mentioning.