[stunnel-users] 4.26 works OK, 4.27 will not POP email

[Jeff Salisbury]

Greetings,  We have been using Stunnel 4.26 to facilitate the sending 
and receiving of email with an email client that is not SSL enabled.  
Version 4.26 has been working great.  However, when we upgrade to 4.27, 
we are unable to POP email (we can send email).  We did not change our 
Stunnel.conf file.

Can anyone advise us what we need to do to get 4.27 working?  I've 
included our Stunnel.conf file contents, and the Stunnel log output below.

Regards,

Jeff

=====================================================

# GLOBAL OPTIONS

client = yes
#output = C:\Documents and Settings\All Users\Application 
Data\stunnel-log.txt
debug = 7
taskbar = yes


# SERVICE-LEVEL OPTIONS

[pop3]
accept=995
connect=mail.OurPOP.com:995

[smtp]
accept=465
connect=mail.OurSMTP.com:465

=====================================================


2009.06.14 14:03:03 LOG7[3348:540]: RAND_status claims sufficient 
entropy for the PRNG
2009.06.14 14:03:03 LOG7[3348:540]: PRNG seeded successfully
2009.06.14 14:03:03 LOG7[3348:540]: SSL context initialized for service pop3
2009.06.14 14:03:03 LOG7[3348:540]: SSL context initialized for service smtp
2009.06.14 14:03:03 LOG5[3348:540]: stunnel 4.27 on x86-pc-mingw32-gnu 
with OpenSSL 0.9.8k 25 Mar 2009
2009.06.14 14:03:03 LOG5[3348:540]: Threading:WIN32 SSL:ENGINE 
Sockets:SELECT,IPv6
2009.06.14 14:03:03 LOG5[3348:3668]: No limit detected for the number of 
clients
2009.06.14 14:03:03 LOG7[3348:3668]: FD 204 in non-blocking mode
2009.06.14 14:03:03 LOG7[3348:3668]: SO_REUSEADDR option set on accept 
socket
2009.06.14 14:03:03 LOG7[3348:3668]: pop3 bound to 0.0.0.0:995
2009.06.14 14:03:03 LOG7[3348:3668]: FD 212 in non-blocking mode
2009.06.14 14:03:03 LOG7[3348:3668]: SO_REUSEADDR option set on accept 
socket
2009.06.14 14:03:03 LOG7[3348:3668]: smtp bound to 0.0.0.0:465
2009.06.14 14:03:11 LOG7[3348:3668]: pop3 accepted FD=228 from 
127.0.0.1:2027
2009.06.14 14:03:11 LOG7[3348:3668]: Creating a new thread
2009.06.14 14:03:11 LOG7[3348:3668]: New thread created
2009.06.14 14:03:11 LOG7[3348:3668]: pop3 accepted FD=244 from 
127.0.0.1:2026
2009.06.14 14:03:11 LOG7[3348:3668]: Creating a new thread
2009.06.14 14:03:11 LOG7[3348:3668]: New thread created
2009.06.14 14:03:11 LOG7[3348:1144]: pop3 started
2009.06.14 14:03:11 LOG7[3348:1144]: FD 228 in non-blocking mode
2009.06.14 14:03:11 LOG5[3348:1144]: pop3 accepted connection from 
127.0.0.1:2027
2009.06.14 14:03:11 LOG7[3348:1144]: FD 268 in non-blocking mode
2009.06.14 14:03:11 LOG6[3348:1144]: connect_blocking: connecting 
216.97.239.60:995
2009.06.14 14:03:11 LOG7[3348:4060]: pop3 started
2009.06.14 14:03:11 LOG7[3348:4060]: FD 244 in non-blocking mode
2009.06.14 14:03:11 LOG5[3348:4060]: pop3 accepted connection from 
127.0.0.1:2026
2009.06.14 14:03:11 LOG7[3348:4060]: FD 280 in non-blocking mode
2009.06.14 14:03:11 LOG6[3348:4060]: connect_blocking: connecting 
216.97.239.60:995
2009.06.14 14:03:11 LOG7[3348:1144]: connect_blocking: s_poll_wait 
216.97.239.60:995: waiting 10 seconds
2009.06.14 14:03:11 LOG7[3348:4060]: connect_blocking: s_poll_wait 
216.97.239.60:995: waiting 10 seconds
2009.06.14 14:03:11 LOG5[3348:1144]: connect_blocking: connected 
216.97.239.60:995
2009.06.14 14:03:11 LOG5[3348:1144]: pop3 connected remote server from 
192.168.0.55:2028
2009.06.14 14:03:11 LOG7[3348:1144]: Remote FD=268 initialized
2009.06.14 14:03:11 LOG7[3348:1144]: SSL state (connect): before/connect 
initialization
2009.06.14 14:03:11 LOG7[3348:1144]: SSL state (connect): SSLv3 write 
client hello A
2009.06.14 14:03:11 LOG5[3348:4060]: connect_blocking: connected 
216.97.239.60:995
2009.06.14 14:03:11 LOG5[3348:4060]: pop3 connected remote server from 
192.168.0.55:2029
2009.06.14 14:03:11 LOG7[3348:4060]: Remote FD=280 initialized
2009.06.14 14:03:11 LOG7[3348:4060]: SSL state (connect): before/connect 
initialization
2009.06.14 14:03:11 LOG7[3348:4060]: SSL state (connect): SSLv3 write 
client hello A
2009.06.14 14:03:11 LOG7[3348:1144]: SSL alert (read): fatal: handshake 
failure
2009.06.14 14:03:11 LOG3[3348:1144]: SSL_connect: 14094410: 
error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure
2009.06.14 14:03:11 LOG5[3348:1144]: Connection reset: 0 bytes sent to 
SSL, 0 bytes sent to socket
2009.06.14 14:03:11 LOG7[3348:1144]: pop3 finished (1 left)
2009.06.14 14:03:11 LOG7[3348:4060]: SSL alert (read): fatal: handshake 
failure
2009.06.14 14:03:11 LOG3[3348:4060]: SSL_connect: 14094410: 
error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure
2009.06.14 14:03:11 LOG5[3348:4060]: Connection reset: 0 bytes sent to 
SSL, 0 bytes sent to socket
2009.06.14 14:03:11 LOG7[3348:4060]: pop3 finished (0 left)