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Old 09-23-2010, 07:18 PM
Joseph Brenner
 
Default pop3 stunnel to gmail

I'm an mh user running ubuntu jaunty, and I want to get my local
email working over SSL connections to a gmail account (POP3/SMTP).
So I'm trying to get mh (probably nmh, but gnu mailutils would be
okay) to talk over SSL using stunnel.

I've succeeded in using slypheed to get mail from gmail, so I know the
gmail account is working and is set-up for pop3 and so on. When I
run inc, though, it just reports:
inc: no servers available

I can see that I've got stunnel running by doing a:
ps ax | egrep stun | egrep -v egrep

Hm... but now that's reporting 6 stunnel processes, which doesn't seem right:
5937 ? SN 0:00 /usr/bin/stunnel4 /etc/stunnel/stunnel.conf
5938 ? SN 0:00 /usr/bin/stunnel4 /etc/stunnel/stunnel.conf
5939 ? SN 0:00 /usr/bin/stunnel4 /etc/stunnel/stunnel.conf
5940 ? SN 0:00 /usr/bin/stunnel4 /etc/stunnel/stunnel.conf
5941 ? SN 0:00 /usr/bin/stunnel4 /etc/stunnel/stunnel.conf
5942 ? SNs 0:00 /usr/bin/stunnel4 /etc/stunnel/stunnel.conf

I'm looking for suggestions on what I might be doing wrong, and
hints on how to go about isolating the problems.

Here's a summary of the kind of configurations I've been trying:

/etc/default/stunnel4:

ENABLED=1
FILES="/etc/stunnel/*.conf"
OPTIONS=""
PPP_RESTART=0

/etc/stunnel/stunnel.conf:

sslVersion = SSLv3
chroot = /var/lib/stunnel4/
setuid = stunnel4
setgid = stunnel4
pid = /stunnel4.pid
socket = l:TCP_NODELAY=1
socket = r:TCP_NODELAY=1

debug = 7
output = /var/log/stunnel4/stunnel.log

client = yes

[pop3s]
accept = 127.0.0.1:995
connect = pop.gmail.com:110

[smtps]
accept = 127.0.0.1:465
connect = smtp.gmail.com:25


/etc/nmh/mts.conf:

mts: smtp
hostable: /etc/nmh/hosts

localname: smtp.gmail.com
# localname: gmail.com

masquerade:

mmdfldir: /var/mail

mmdflfil:

# pophost: localhost
# pophost: pop.gmail.com:995
pophost: pop.gmail.com:110
# pophost: pop.gmail.com

# servers: localhost
servers: smtp.gmail.com



/var/log/stunnel4/stunnel.log

2010.09.21 11:11:41 LOG7[6528:140533218399984]: Snagged 64 random
bytes from /dev/urandom
2010.09.21 11:11:41 LOG7[6528:140533218399984]: RAND_status claims
sufficient entropy for the PRNG
2010.09.21 11:11:41 LOG7[6528:140533218399984]: PRNG seeded successfully
2010.09.21 11:11:41 LOG7[6528:140533218399984]: SSL context
initialized for service pop3s
2010.09.21 11:11:41 LOG7[6528:140533218399984]: SSL context
initialized for service imaps
2010.09.21 11:11:41 LOG7[6528:140533218399984]: SSL context
initialized for service smtps
2010.09.21 11:11:41 LOG5[6528:140533218399984]: stunnel 4.22 on
x86_64-pc-linux-gnu with OpenSSL 0.9.8g 19 Oct 2007
2010.09.21 11:11:41 LOG5[6528:140533218399984]: Threading:PTHREAD
SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP
2010.09.21 11:11:41 LOG6[6528:140533218399984]: file ulimit = 1024
(can be changed with 'ulimit -n')
2010.09.21 11:11:41 LOG6[6528:140533218399984]: poll() used - no
FD_SETSIZE limit for file descriptors
2010.09.21 11:11:41 LOG5[6528:140533218399984]: 500 clients allowed
2010.09.21 11:11:41 LOG7[6528:140533218399984]: FD 10 in non-blocking mode
2010.09.21 11:11:41 LOG7[6528:140533218399984]: FD 11 in non-blocking mode
2010.09.21 11:11:41 LOG7[6528:140533218399984]: FD 12 in non-blocking mode
2010.09.21 11:11:41 LOG7[6528:140533218399984]: SO_REUSEADDR option
set on accept socket
2010.09.21 11:11:41 LOG7[6528:140533218399984]: pop3s bound to 127.0.0.1:1109
2010.09.21 11:11:41 LOG7[6528:140533218399984]: FD 13 in non-blocking mode
2010.09.21 11:11:41 LOG7[6528:140533218399984]: SO_REUSEADDR option
set on accept socket
2010.09.21 11:11:41 LOG7[6528:140533218399984]: imaps bound to 0.0.0.0:993
2010.09.21 11:11:41 LOG7[6528:140533218399984]: FD 14 in non-blocking mode
2010.09.21 11:11:41 LOG7[6528:140533218399984]: SO_REUSEADDR option
set on accept socket
2010.09.21 11:11:41 LOG7[6528:140533218399984]: smtps bound to 127.0.0.1:259
2010.09.21 11:11:41 LOG7[6534:140533218399984]: Created pid file /stunnel4.pid

/var/log/mail.log

Sep 21 13:40:32 fineline gnu-pop3d[15484]: Incoming connection opened
Sep 21 13:40:32 fineline gnu-pop3d[15484]: connect from 127.0.0.1
Sep 21 13:40:32 fineline gnu-pop3d[15484]: User `doomvox@gmail.com': nonexistent
Sep 21 13:40:32 fineline gnu-pop3d[15484]: Session ended for no user

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