[stunnel-users] Problems with stunnel 5.04 for Windows

Fri Oct 10 23:29:09 CEST 2014

Hi!  New to this list and this product.  I posted this on the Amazon
forums, but I need to fix this fast, so I thought I would post it here as
well.

I am running stunnel 5.04 for Windows on a Windows 2012 R2 instance. I have
it working with SES, but after a while it just keeps timing out. I have to
manually reload the configuration file to get it to start working again.
What am I doing wrong?

Here is a part of the log:

2014.10.09 07:43:57 LOG5964 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:62779
2014.10.09 07:44:07 LOG3964 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.68.86.38:465: TIMEOUTconnect exceeded
2014.10.09 07:44:17 LOG3964 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.68.197.46:465: TIMEOUTconnect exceeded
2014.10.09 07:44:27 LOG3964 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.213.178.250:465: TIMEOUTconnect exceeded
2014.10.09 07:44:27 LOG5964 <https://forums.aws.amazon.com/>: Connection
reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket
2014.10.09 11:30:18 LOG53224 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:63014
2014.10.09 11:30:28 LOG33224 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.68.197.46:465: TIMEOUTconnect exceeded
2014.10.09 11:30:38 LOG33224 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.213.178.250:465: TIMEOUTconnect exceeded
2014.10.09 11:30:48 LOG33224 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.68.86.38:465: TIMEOUTconnect exceeded
2014.10.09 11:30:48 LOG53224 <https://forums.aws.amazon.com/>: Connection
reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket
2014.10.09 11:31:34 LOG51000 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:63019
2014.10.09 11:31:44 LOG31000 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.213.178.250:465: TIMEOUTconnect exceeded
2014.10.09 11:31:54 LOG31000 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.68.86.38:465: TIMEOUTconnect exceeded
2014.10.09 11:32:01 LOG5388 <https://forums.aws.amazon.com/>: Reading
configuration from file stunnel.conf
2014.10.09 11:32:01 LOG5388 <https://forums.aws.amazon.com/>: FIPS mode
disabled
2014.10.09 11:32:01 LOG5388 <https://forums.aws.amazon.com/>: Configuration
successful
2014.10.09 11:32:04 LOG31000 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.68.197.46:465: TIMEOUTconnect exceeded
2014.10.09 11:32:04 LOG51000 <https://forums.aws.amazon.com/>: Connection
reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket
2014.10.09 11:32:14 LOG5964 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:63024
2014.10.09 11:32:14 LOG5964 <https://forums.aws.amazon.com/>: s_connect:
connected 54.68.159.203:465
2014.10.09 11:32:14 LOG5964 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> connected remote server
from 172.31.3.85:63025
2014.10.09 11:32:14 LOG5964 <https://forums.aws.amazon.com/>: Connection
closed: 494 byte(s) sent to SSL, 360 byte(s) sent to socket
2014.10.09 11:32:18 LOG5892 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:63026
2014.10.09 11:32:18 LOG5892 <https://forums.aws.amazon.com/>: s_connect:
connected 54.213.190.197:465
2014.10.09 11:32:18 LOG5892 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> connected remote server
from 172.31.3.85:63027
2014.10.09 11:32:18 LOG5892 <https://forums.aws.amazon.com/>: Connection
closed: 1592 byte(s) sent to SSL, 360 byte(s) sent to socket
2014.10.09 12:41:29 LOG53700 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:63100
2014.10.09 12:41:29 LOG53700 <https://forums.aws.amazon.com/>: s_connect:
connected 54.244.8.28:465
2014.10.09 12:41:29 LOG53700 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> connected remote server
from 172.31.3.85:63101
2014.10.09 12:41:29 LOG53700 <https://forums.aws.amazon.com/>: Connection
closed: 1609 byte(s) sent to SSL, 360 byte(s) sent to socket
2014.10.09 12:46:13 LOG53428 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:63107
2014.10.09 12:46:13 LOG53428 <https://forums.aws.amazon.com/>: s_connect:
connected 54.68.159.203:465
2014.10.09 12:46:13 LOG53428 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> connected remote server
from 172.31.3.85:63108
2014.10.09 12:46:14 LOG53428 <https://forums.aws.amazon.com/>: Connection
closed: 1609 byte(s) sent to SSL, 360 byte(s) sent to socket
2014.10.09 16:32:21 LOG51876 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:63335
2014.10.09 16:32:21 LOG51876 <https://forums.aws.amazon.com/>: s_connect:
connected 54.213.190.197:465
2014.10.09 16:32:21 LOG51876 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> connected remote server
from 172.31.3.85:63336
2014.10.09 16:32:21 LOG51876 <https://forums.aws.amazon.com/>: Connection
closed: 1611 byte(s) sent to SSL, 360 byte(s) sent to socket
2014.10.10 01:52:46 LOG5440 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:64017
2014.10.10 01:52:46 LOG5440 <https://forums.aws.amazon.com/>: s_connect:
connected 54.244.8.28:465
2014.10.10 01:52:46 LOG5440 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> connected remote server
from 172.31.3.85:64018
2014.10.10 01:52:47 LOG5440 <https://forums.aws.amazon.com/>: Connection
closed: 5129 byte(s) sent to SSL, 360 byte(s) sent to socket
2014.10.10 08:32:20 LOG53548 <https://forums.aws.amazon.com/>: Service
smtp-tls-wrapper <https://forums.aws.amazon.com/> accepted connection from
127.0.0.1:64423
2014.10.10 08:32:30 LOG33548 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.68.159.203:465: TIMEOUTconnect exceeded
2014.10.10 08:32:40 LOG33548 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.213.190.197:465: TIMEOUTconnect exceeded
2014.10.10 08:32:50 LOG33548 <https://forums.aws.amazon.com/>: s_connect:
s_poll_wait 54.244.8.28:465: TIMEOUTconnect exceeded
2014.10.10 08:32:50 LOG53548 <https://forums.aws.amazon.com/>: Connection
reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket

You can see that it stops, then I reload the configuration and it works
again, and then eventually stops. Here is my configuration file:

engine = capi

cert = stunnel.pem

options = NO_SSLv2

ssmtp <https://forums.aws.amazon.com/>
accept = 465
connect = 25

smtp-tls-wrapper <https://forums.aws.amazon.com/>
accept = 2525
client = yes
connect = email-smtp.us-west-2.amazonaws.com:465

Thank you.

-- 
Mark F. Hannig
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