Run: # tcpdump -n -i [interface facing client] -s256 'host 66.24.215.191'
See if they are actually attemping an SMTP connection and if the socket is handshaking. It doesn't sound like it. Also, run 'netstat -tan' on both the client and server at the time of the send/receive mail operation. Note: No SMTP traffic is shown in your log below. ~BAS On Sat, 28 Mar 2009, Jonathan Nalewajek wrote: > Hello everyone, > > I just set up an Ubuntu 8.10 server, which purpose is to act as a web > server and e-mail server. > > I have courier installed (courier-imap + courier-imap-ssl), and I also > want to use courier as my smtp server (courier-mta and courier-mta-ssl). > > I configured Courier (using the web admin gui) and installed squirrelmail > for a webmail client. I configured squirrelmail, and it is running > flawlessly. I can send mail, receive mail, etc. No problems whatsoever (I > am sending this e-mail from it). > > However, most of the people that will be using this server use Microsoft > Outlook or Thunderbird. I tested both Outlook and Thunderbird, and > although both can receive mail, neither can send mail. > > So my first thought was to make sure telnet could connect. Telnet does > connect on port 25 and 465, and I was even able to send an e-mail via > telnet commands. > > I then ran: > $lsof -i :25 > COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME > couriertc 1397 daemon 3u IPv6 497068 TCP *:smtp (LISTEN) > > $ lsof -i :465 > COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME > couriertc 1432 daemon 3u IPv6 497107 TCP *:ssmtp (LISTEN) > > When I try sending an e-mail via Thunderbird or Outlook, here is what is > in /var/log/mail.log: > > Mar 28 13:01:27 lucy imapd: LOGIN, user=jonnale, > ip=[::ffff:66.24.215.191], port=[57210], protocol=IMAP > > It then eventually times out or just disconnects. > > Thunderbird+outlook gives me the error that the SMTP server is rejecting > connections and that it cannot connect. Also, Thunderbird+Outlook never > even prompt me for my password when connecting to the SMTP server. Does > this mean I am not authenticating, despite it saying I am logging in in > mail.log? > > Note: I tried sending mail with the following SMTP settings: > No Secure Connection: Port 25 > Secure Connection: Port 25 (TLS), Port 465 (SSL) > > Neither will send the mail from Outlook or Thunderbird) > > Any help or suggestions are greatly appreciated. > > > ------------------------------------------------------------------------------ > _______________________________________________ > courier-users mailing list > [email protected] > Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users > l8* -lava (Brian A. Seklecki - Pittsburgh, PA, USA) http://www.spiritual-machines.org/ "Show me a young conservative and I'll show you someone with no heart. Show me an old liberal and I'll show you someone with no brains." ~ Winston Churchill ------------------------------------------------------------------------------ _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
