126,163,sina,139都是行的。hotmail :imap_open("{pop.live.com:110/pop3}INBOX","xxx","xxx");
imap_errors() 输出:[0] => Connection failed to rds.live.com.nsatc.net,110: Connection timed out"{imap.live.con:993/imap/ssl}INBOX"
imap_errors() 输出:[0] => Can't connect to nj.redirect.local,993: Connection timed outqq :"{pop.qq.com:110/pop3}INBOX"
imap_errors() 输出:[0] => 454 POP����δ��ͨ����ϸ˵����鿴: http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=166 ACCOUNT IS NOT ENABLED FOR POP ACCESS. FOR MORE DETAILS PLEASE VISIT: http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=166
    [1] => POP3 connection broken in response  "{imap.qq.com:993/imap/ssl}INBOX"
imap_errors() 输出:[0] => Can not authenticate to IMAP server: sohu: "{pop.sohu.com:110/pop3}INBOX"
imap_errors() 输出:[0] => TLS/SSL failure for pop.sohu.com: SSL negotiation failed
"{imap.sohu.com:993/imap/ssl}INBOX"
imap_errors() 输出:[0] => TLS/SSL failure for imap.sohu.com: SSL negotiation failedgmail :"{pop.gmail.com:110/pop3}INBOX"
imap_errors() 输出:[0] => Connection failed to gmail-pop.l.google.com,110: Connection timed out
    [1] => Connection failed to gmail-pop.l.google.com,110: Connection timed out
"{imap.gmail.com:993/imap/ssl}INBOX"是可以收到的。