On 19 Mar 2019, at 3.31, lty via dovecot <dovecot@dovecot.org> wrote:

I use the MAC Foxmail client, v2.2.36 can't receive mail, but v2.1.17 can receive mail.
I grabbed the network package and found that Foxmail was not processing the next step after sending the D LIST "" * command.
I suspect that because of the time of return, Foxmail is not recognized, so I want to remove this time.