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.:
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 send email from my local computer. 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 (from a remote server):
$ 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.
I tried setting Eudora to use STARTTLS, SSL/TLS, and none, but they all time out. 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 haven't set up any firewall rules:
$ 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
netstat output:
$ 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
MX record:
$ 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!