I have just outfitted a basic server (Ubuntu 12.04 LTS /Precise Pangolin) and have installed Postfix and Dovecot, based on the Ubuntu manuals. https://help.ubuntu.com/community/Dovecot https://help.ubuntu.com/community/Postfix Postfix gets mail out of the box to my gmail account, e.g.: Code: sendmail [redacted]@gmail.com < /etc/motd Testing remote access with the open source client for Eudora, I can successfully download email, so Dovecot/POP3 seems to be functioning. However, I cannot seem to get Eudora to successfully get mail from the client to the box or beyond. Depending on the security/port config I use, it generally times out. I seem to be able to get access via the local terminal, and remote shells, such as: Code: $ telnet lists.teachers.net 25 Trying 50.56.184.186... Connected to lists.teachers.net. Escape character is '^]'. 220 lists.teachers.net ESMTP Postfix (Ubuntu) ehlo lists.teachers.net 250-lists.teachers.net 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN quit 221 2.0.0 Bye Connection closed by foreign host. When Eudora tries to connect, i don't see any activity in the /var/log/mail/log or /var/log/mail.err , which I guess means those aren't the relevant logs or there is no activity to report. I tried setting Eudora to use STARTTLS, SSL/TLS, and none, but they all time out. How would I go about troubleshooting this? I haven't set up any firewall rules: Code: $ sudo iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination Code: $ sudo netstat -tap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:submission *:* LISTEN 4112/master tcp 0 0 *:pop3 *:* LISTEN 3210/dovecot tcp 0 0 *:imap2 *:* LISTEN 3210/dovecot tcp 0 0 *:ssh *:* LISTEN 564/sshd tcp 0 0 *:smtp *:* LISTEN 4112/master tcp 0 0 *:imaps *:* LISTEN 3210/dovecot tcp 0 0 *:pop3s *:* LISTEN 3210/dovecot tcp 0 300 lists.teachers.net:ssh 99-95-169-159.lig:55464 ESTABLISHED 1433/sshd: listman tcp6 0 0 [::]:submission [::]:* LISTEN 4112/master tcp6 0 0 [::]:pop3 [::]:* LISTEN 3210/dovecot tcp6 0 0 [::]:imap2 [::]:* LISTEN 3210/dovecot tcp6 0 0 [::]:ssh [::]:* LISTEN 564/sshd tcp6 0 0 [::]:smtp [::]:* LISTEN 4112/master tcp6 0 0 [::]:imaps [::]:* LISTEN 3210/dovecot tcp6 0 0 [::]:pop3s [::]:* LISTEN 3210/dovecot Code: $ dig mx lists.teachers.net ; <<>> DiG 9.8.1-P1 <<>> mx lists.teachers.net ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22244 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3 ;; QUESTION SECTION: ;lists.teachers.net. IN MX ;; ANSWER SECTION: lists.teachers.net. 300 IN MX 100 lists.teachers.net. ;; AUTHORITY SECTION: teachers.net. 2057 IN NS dns1.stabletransit.com. teachers.net. 2057 IN NS dns2.stabletransit.com. ;; ADDITIONAL SECTION: lists.teachers.net. 300 IN A 50.56.184.186 dns1.stabletransit.com. 77665 IN A 69.20.95.4 dns2.stabletransit.com. 77741 IN A 65.61.188.4 ;; Query time: 830 msec ;; SERVER: 72.3.128.241#53(72.3.128.241) ;; WHEN: Thu Jan 10 14:08:34 2013 ;; MSG SIZE rcvd: 155 How can I troubleshoot this, maybe from a remote machine? What logs might shed light? What other info would be helpful here? Thanks!
I figured it out, apparently SBC blocks port 25 on outgoing u-verse traffic. I enabled port 587 and immediately was able to access to smtp service from Eudora. Thanks for your help! (Do I mark this "solved" or something?)
