Hi, I finally got it work with a workaround. The problem is mostly caused by a timeout somewhere and mutt can't get recovered. I managed to get a faster connection which can download the headers in a much shorter time. Then the TLS read problem is no longer occured. The connection is via a IPv6 proxy which is much faster than direct IPv4 here.
This workaround may not work all the time in case I have extremely a large amount of mails. So I tried isync (currently named mbsync) also. It works fine. It allows you checking mails offline. And you can also config it to store only *recent* mails. But it has the SSL/TLS read as well when getting very large mails, so I made a IPv6 patch in order to use my IPv6 connection. I will try to share this patch somewhere. Best regards du yang -- oooO::::::::: (..)::::::::: :\.(:::Oooo:: ::\_)::(..):: :::::::)./::: ::::::(_/::::
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