[SOLVED] Local Mail Server Setup Background We now live in an area where our link to the internet is an expensive wireless connection using the cellular system. Members of our family email each other a lot, with large attachments such as videos, pictures, etc. Goal I want to set-up a LAN mail server that we can use for family members where the mail just stays within the LAN and does not go out onto the Internet. Progress I installed Ubuntu 12.04 LTS Server 64 bit on a spare machine following the guide at this web site: The Perfect Server - Ubuntu 12.04 LTS (Apache2, BIND, Dovecot, ISPConfig 3) I registered the domain musgravelanding.net with hover and you can see the results at: http://pingability.com/zoneinfo.jsp?domain=musgravelanding.net Results Here is my /etc/hosts file: Code: 127.0.0.1 localhost.localdomain localhost 192.168.241.80 server.musgravelanding.net server # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters And here is my /etc/hostname file: Code: server.musgravelanding.net My /etc/postfix/main.cf is: Code: # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = /usr/share/doc/postfix # TLS parameters smtpd_tls_cert_file = /etc/postfix/smtpd.cert smtpd_tls_key_file = /etc/postfix/smtpd.key smtpd_use_tls = yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = server.musgravelanding.net alias_maps = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases alias_database = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases myorigin = /etc/mailname mydestination = server.musgravelanding.net, localhost, localhost.localdomain relayhost = mynetworks = 127.0.0.0/8 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all html_directory = /usr/share/doc/postfix/html virtual_alias_domains = virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, proxy:mysql:/etc/postfix/mysql-virtual_email2email.cf, hash:/var/lib/mailman/data/virtual-mailman virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf virtual_mailbox_base = /var/vmail virtual_uid_maps = static:5000 virtual_gid_maps = static:5000 smtpd_sasl_auth_enable = yes broken_sasl_auth_clients = yes smtpd_sasl_authenticated_header = yes smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf, reject_unauth_destination smtpd_tls_security_level = may transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf relay_domains = mysql:/etc/postfix/mysql-virtual_relaydomains.cf relay_recipient_maps = mysql:/etc/postfix/mysql-virtual_relayrecipientmaps.cf proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps smtpd_sender_restrictions = check_sender_access mysql:/etc/postfix/mysql-virtual_sender.cf smtpd_client_restrictions = check_client_access mysql:/etc/postfix/mysql-virtual_client.cf smtpd_client_message_rate_limit = 100 maildrop_destination_concurrency_limit = 1 maildrop_destination_recipient_limit = 1 virtual_transport = dovecot header_checks = regexp:/etc/postfix/header_checks mime_header_checks = regexp:/etc/postfix/mime_header_checks nested_header_checks = regexp:/etc/postfix/nested_header_checks body_checks = regexp:/etc/postfix/body_checks owner_request_special = no dovecot_destination_recipient_limit = 1 smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth content_filter = amavis:[127.0.0.1]:10024 receive_override_options = no_address_mappings The result of a test send is: Code: echo "Subject: Test" | /usr/lib/sendmail -v [email protected] Mail Delivery Status Report will be mailed to <peter>. Testing with netstat reveals: Code: peter@server:~$ netstat -an | grep tcp | grep 25 tcp 0 0 127.0.0.1:10025 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:3306 127.0.0.1:41625 ESTABLISHED tcp 0 0 127.0.0.1:41625 127.0.0.1:3306 ESTABLISHED tcp6 0 0 :::25 :::* LISTEN You have new mail in /var/mail/peter And iptables: Code: peter@server:~$ sudo iptables -nvL [sudo] password for peter: Chain INPUT (policy ACCEPT 34799 packets, 42M bytes) pkts bytes target prot opt in out source destination 824 67412 fail2ban-dovecot-pop3imap tcp -- * * 0.0.0.0/0 0.0.0.0/0 multiport dports 110,995,143,993 263 14292 fail2ban-pureftpd tcp -- * * 0.0.0.0/0 0.0.0.0/0 multiport dports 21 2202 187K fail2ban-ssh tcp -- * * 0.0.0.0/0 0.0.0.0/0 multiport dports 22 Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 21919 packets, 1686K bytes) pkts bytes target prot opt in out source destination Chain fail2ban-dovecot-pop3imap (1 references) pkts bytes target prot opt in out source destination 818 67052 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0 Chain fail2ban-pureftpd (1 references) pkts bytes target prot opt in out source destination 263 14292 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0 Chain fail2ban-ssh (1 references) pkts bytes target prot opt in out source destination 2202 187K RETURN all -- * * 0.0.0.0/0 0.0.0.0/0 peter@server:~$ Checking with Telnet reveals: Code: peter@server:~$ telnet localhost 25 Trying 127.0.0.1... Connected to localhost.localdomain. Escape character is '^]'. 220 server.musgravelanding.net ESMTP Postfix (Ubuntu) ehlo server 250-server.musgravelanding.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. peter@server:~$ And a look at the logs: Code: peter@server:~$ tail /var/log/mail.log Jun 18 14:49:36 server postfix/smtpd[8749]: disconnect from localhost.localdomain[127.0.0.1] Jun 18 14:49:40 server postfix/smtpd[8749]: connect from localhost.localdomain[127.0.0.1] Jun 18 14:50:01 server postfix/smtpd[8823]: connect from localhost.localdomain[127.0.0.1] Jun 18 14:50:01 server postfix/smtpd[8823]: lost connection after CONNECT from localhost.localdomain[127.0.0.1] Jun 18 14:50:01 server postfix/smtpd[8823]: disconnect from localhost.localdomain[127.0.0.1] Jun 18 14:50:01 server dovecot: imap-login: Disconnected (no auth attempts): rip=127.0.0.1, lip=127.0.0.1, secured Jun 18 14:50:01 server dovecot: pop3-login: Disconnected (no auth attempts): rip=127.0.0.1, lip=127.0.0.1, secured Jun 18 14:50:17 server postfix/smtpd[8749]: disconnect from localhost.localdomain[127.0.0.1] Jun 18 14:50:21 server postfix/smtpd[8823]: connect from localhost.localdomain[127.0.0.1] Jun 18 14:50:28 server postfix/smtpd[8823]: disconnect from localhost.localdomain[127.0.0.1] peter@server:~$ At this point /var/log/mail.err is empty From my wife's computer using Thunderbird, she tried to send me a test email, but it gives a SMTP error when Thunderbird is set up as smtp.musgravelanding.net. When I change the settings in Thunderbird to give the server the explicit ipaddress 192.168.241.80 the mail is sent. Questions What do I need to do to get this working? I don't understand how to set the MX record if that is appropriate? Can you recommend links to further advice on this topic? Thank you, Peter
It appears that the mail system is working perfectly as my wife and I are able to send emails back and forth using Squirrel Mail. The problem seems to be how to set up Thunderbird with the right settings. I've already experimented at random with no success, so now I'll go in and approach it more systematically. Peter
I found the solution to my problem. In Thunderbird, I needed to specify the username as [email protected] instead of just peter My next project is to see if I can get it so I can use Squirrel Mail from outside of my LAN to access my mail. Cheers, Peter
