Yahoo protocol started to not be able to connect suddenly. There is no error message, just the login seems to go on forever.
I made a connection log and the relevant lines look like this:
[12:06:27 2134] [YAHOO/libyahoo2] Connection request to vcs.msg.yahoo.com:80 (Flags 1)....
[12:06:27 2134] [YAHOO/libyahoo2] (11D5DC88) Connecting to server vcs.msg.yahoo.com:80....
[12:06:27 2134] [YAHOO/libyahoo2] (11D5DC88) Connecting to ip 66.196.120.43:80 ....
[12:06:29 2134] [YAHOO/libyahoo2] src\netlibopenconn.cpp 716: connect() failed (10061)
[12:06:29 2134] [YAHOO/libyahoo2] src\libyahoo2\libyahoo2.cpp:4883:
[12:06:29 2134] [YAHOO/libyahoo2] [yahoo_login] id: 1, initial status: 0
[12:06:29 2134] [YAHOO/libyahoo2]
[12:06:29 2134] [YAHOO] src\yahoo.cpp:1354:
[12:06:29 2134] [YAHOO] [ext_connect_async] mcs.msg.yahoo.com:5050 type: 0
[12:06:29 2134] [YAHOO]
[12:06:29 2134] [YAHOO] src\yahoo.cpp:1158:
[12:06:29 2134] [YAHOO] [ext_connect] mcs.msg.yahoo.com:5050 type: 0
[12:06:29 2134] [YAHOO]
[12:06:29 2134] [YAHOO] Connection request to mcs.msg.yahoo.com:5050 (Flags 4)....
[12:06:29 2134] [YAHOO] (11D5E020) Connecting to server mcs.msg.yahoo.com:5050....
[12:06:29 2134] [YAHOO] (11D5E020) Connecting to ip 66.196.114.80:5050 ....
[12:06:29 2134] [YAHOO] (1456) Connected to mcs.msg.yahoo.com:5050
[12:06:29 2134] [YAHOO] src\yahoo.cpp:1179:
[12:06:29 2134] [YAHOO] [ext_connect] Got: 299229216
[12:06:29 2134] [YAHOO]
[12:06:29 2134] [YAHOO] src\yahoo.cpp:1358:
[12:06:29 2134] [YAHOO] [ext_connect_async] mcs.msg.yahoo.com:5050 type: 0, result: 299229216
[12:06:29 2134] [YAHOO]
[12:06:29 2134] [YAHOO/libyahoo2] Sending Packet:
[12:06:29 2134] [YAHOO/libyahoo2] -=[ Verify (0x4c) ]=-
[12:06:29 2134] [YAHOO/libyahoo2] ----------------------
[12:06:29 2134] [YAHOO] src\yahoo.cpp:1269:
[12:06:29 2134] [YAHOO] [ext_add_handler] fd:299229216, id:1, cond: 2, tag 7
[12:06:29 2134] [YAHOO]
[12:06:29 2134] [YAHOO] src\yahoo.cpp:1269:
[12:06:29 2134] [YAHOO] [ext_add_handler] fd:299229216, id:1, cond: 1, tag 8
[12:06:29 2134] [YAHOO]
[12:06:29 2134] [YAHOO/libyahoo2] src\libyahoo2\libyahoo2.cpp:4303:
[12:06:29 2134] [YAHOO/libyahoo2] write callback: id=1 fd=299229216 data=0A0CC520
[12:06:29 2134] [YAHOO/libyahoo2]
[12:06:29 2134] [YAHOO/libyahoo2] src\libyahoo2\libyahoo2.cpp:4308:
[12:06:29 2134] [YAHOO/libyahoo2] writing 20 bytes
[12:06:29 2134] [YAHOO/libyahoo2]
[12:06:29 2134] [YAHOO] (11D5E020:1456) Data sent
00000000: 59 4D 53 47-00 10 00 00-00 00 00 4C-00 00 00 00 YMSG.......L....
00000010: 00 00 00 00- ....
[12:06:29 2134] [YAHOO] src\yahoo.cpp:1278:
[12:06:29 2134] [YAHOO] [ext_remove_handler] id:1 tag:7
[12:06:29 2134] [YAHOO]
[12:06:29 2134] [YAHOO] src\yahoo.cpp:1285:
[12:06:29 2134] [YAHOO] Marking id:1 fd:299229216 tag:7 for removal
[12:06:29 2134] [YAHOO]
It might be something that sysadmin changed. Is there any other alternative login address/port ?