First off, I am a newbie at Linux, although I've been running a WAMP webserver for a couple of years on Windows Pro XP SP2. I have four websites running on this server, along with a hMailServer for three of them. I currently use ZoneEdit.com for DNS forwarding for all sites. Although the Windows setup is working fine, I would like to move everything to a Linux server for security reasons (I've had my mail server hijacked a couple of times). The server resides in my home behind a router/gateway, and I use ADSL through the phone company for internet access. I do have a static IP address through the phone company. I just installed "The Perfect Server" using Ubuntu 7.10, following the instructions on HowtoForge, and installed ISPConfig to manage the various virtual sites. I'm having trouble with the mail server piece. I am able to send mail from one user at mydomain.com to another user at mydomain.com, but mail to/from external addresses is not getting delivered or received, and I have no idea what I may have set up wrong that is causing this to happen (this is not a problem on the Windows machine). I've been working on this for almost a week now, and am no closer to solving this issue now than I was when I started. Any assistance here would be most greatly appreciated. I'll post any log or configuration files that you tell me to post. Help!
Thanks for responding.... I did finally get the "receive" piece to work....I can now send mail from an external address and it is received at the main user's mailbox (the user I set up when I installed Ubuntu), although nothing is getting delivered to a user who is set up inside ISPConfig yet (I'm trying to tackle one thing at a time here). When I try to send mail from the main user to an external address, the connection is timing out (here is the latest group of messages from the mail log; these get repeated over and over). I used telnet to compose the message: ---- Apr 11 08:10:28 server postfix/qmgr[19911]: AFC52320429E: from=<[email protected]>, size=510, nrcpt=1 (queue active) Apr 11 08:10:59 server postfix/smtp[30748]: connect to b.mx.mail.yahoo.com[66.196.97.250]:25: Connection timed out Apr 11 08:11:29 server postfix/smtp[30748]: connect to c.mx.mail.yahoo.com[216.39.53.3]:25: Connection timed out Apr 11 08:11:59 server postfix/smtp[30748]: connect to d.mx.mail.yahoo.com[66.196.82.7]:25: Connection timed out Apr 11 08:12:29 server postfix/smtp[30748]: connect to a.mx.mail.yahoo.com[209.191.118.103]:25: Connection timed out Apr 11 08:12:59 server postfix/smtp[30748]: connect to e.mx.mail.yahoo.com[216.39.53.1]:25: Connection timed out Apr 11 08:12:59 server postfix/smtp[30748]: AFC52320429E: to=<[email protected]>, relay=none, delay=25430, delays=25280/0.01/151/0, dsn=4.4.1, status=deferred (connect to e.mx.mail.yahoo.com[216.39.53.1]:25: Connection timed out) ---- On the Windows server, I relay messages through the phone company's mail server, and I originally had that server set up as a relay on the Linux server, but I removed it because I thought that might be the problem (I was doing on the Windows server b/c without the relay my mail gets flagged as "spam"). When I removed the relayserver setting there was no impact on the type of log messages other than they now says relay=none. Incoming messages on port 25 are getting delivered to [email protected], and if I switch the router to point to the Windows server the mail function works without a problem so I'm pretty sure this is a configuration issue with either Linux or with Postfix; however, I have no idea what I need to change.
From the logs it looks like the postfix machine cannot connect outside your network on port 25. Are you sure you have the default gateway setup correctly and your router is not blocking the connections out
No, the router is working fine -- if I simply point it to the Windows server instead of the Linux server by changing the internal IP address for the mail server ports (POP, IMAP and SMTP) everything works great. I'm fairly certain this is confined to the Linux machine, either the server setup or Postfix. Here's a netstat -tulp listing: Code: root@server:/home/lhridley# netstat -tulp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:mysql *:* LISTEN 5076/mysqld tcp 0 0 *:www *:* LISTEN 5547/apache2 tcp 0 0 *:81 *:* LISTEN 5511/ispconfig_http tcp 0 0 192.168.2.114:domain *:* LISTEN 32622/named tcp 0 0 localhost.locald:domain *:* LISTEN 32622/named tcp 0 0 *:ftp *:* LISTEN 6712/proftpd: (acce tcp 0 0 localhost.localdoma:953 *:* LISTEN 32622/named tcp 0 0 *:smtp *:* LISTEN 19907/master tcp 0 0 *:https *:* LISTEN 5547/apache2 tcp6 0 0 *:imaps *:* LISTEN 5189/couriertcpd tcp6 0 0 *:pop3s *:* LISTEN 5224/couriertcpd tcp6 0 0 *:pop3 *:* LISTEN 5202/couriertcpd tcp6 0 0 *:imap2 *:* LISTEN 5164/couriertcpd tcp6 0 0 *:ssh *:* LISTEN 4982/sshd tcp6 0 0 ip6-localhost:953 *:* LISTEN 32622/named tcp6 0 0 *:smtp *:* LISTEN 19907/master getnameinfo failed udp 0 0 192.168.2.114:domain *:* 32622/named udp 0 0 localhost.locald:domain *:* 32622/named udp 0 0 *:32840 *:* 32622/named udp 0 0 192.168.2.114:ntp *:* 5356/ntpd udp 0 0 localhost.localdoma:ntp *:* 5356/ntpd udp 0 0 *:ntp *:* 5356/ntpd udp6 0 0 *:32841 *:* 32622/named udp6 0 0 fe80::219:66ff:fe5d:ntp *:* 5356/ntpd udp6 0 0 ip6-localhost:ntp *:* 5356/ntpd udp6 0 0 *:ntp *:* 5356/ntpd There is one thing that stands out to me: Code: tcp6 0 0 *:smtp *:* LISTEN 19907/master getnameinfo failed But I have no idea how to fix this. Any pointers?
thats not a problem. whats the output of Code: netstat -nr Does it have the correct default route ? Can you connect Code: telnet smtp.gmail.com 25
netstat -nr produces: Code: Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.2.1 0.0.0.0 UG 0 0 0 eth0 I cannot get a connection using telnet smtp.gmail.com 25. However, I can get a connection to my phone company's mail server using: Code: telnet mail.bellsouth.net 25
Okay that means your ISP/phone company is blocking port 25 connections you need to use thier mail server as your smart host. Add this to your postfix main.cf Code: relayhost = [mail.bellsouth.net] That is if that is the mail server your ISP lets you use to relay mail, if its different then substitute it there.
oh! Oh! OH! Success!!! I changed "mynetworks" in the main.cf file....I forgot to put the commas between the different network IP addresses...... And I added the mail.bellsouth.net relay. And restarted postfix... And now I've now successfully delivered two e-mails to my yahoo.com address from mydomain.com. Thank you! Thank you! Thank you! Even though you didn't catch my stupidity, sometimes you just need dialogue with another to make things click. Thanks so much for your willingness to help with this.
