本站提供的都是免费且公共的节点，稳定性与长时间连接速率无法与收费版的高速机场节点相提并论，不能奢望太多。 IMAP - a protocol just like POP3, but with assistance for folders, labels, examining and controlling messages and folders around the server without the need of downloading every little thing to local Personal computer and deleting it from the server. IMAP works by using port 143 TC... https://createssh.net/ssh-udp