Postfix, Dovecot, MySQL on Ubuntu 12.04 - help needed

Discussion in 'Server Operation' started by blinky, Sep 19, 2012.

  1. blinky

    blinky Member

    I'm relatively new to Linux (Ubuntu) but have manged, thus far, to get it installed on my former Windows machine when I purchased a new desktop.

    A month or so ago, I cedided to install Apache and VSFTP on it which proved to be a reasonably trouble-free task though I'm sure there's lots I haven't even considered.

    Two weeks ago, I decided to try my hand at installed a mail server. This, unfrortunately, has turned out to be a taxing process and I'm in way over my head.

    The problem is further complicated by the fact that I have a severe visual impairment and use screen reading software to acess written material. As a consequence, I find myself editting configuration files on a Windows machine equipped with voice sythesis and then copying the files back over top. Not for the faint of heart.

    There are a host of help guides out there many of which are somewhat dated so I was looking for something recent dealing specifically with Ubuntu 12.04 so that it would be relevant to my software.

    I have used the guide at:

    but, of course, it doesn't work.

    I'm not sure where the problem lay. It's likely several problems or several things that have to be addressed. And, not to overstate the fact, I am very new to linux.

    I'm hoping I can find someone in here who can walk me thorugh the process, one step at a time, and help me sort out where I've gone wrong. I expect it's going to take some time to sort out and there'll be a bit of a learning curve on my part. (Patience on yours I hope.)

    When I try to telnet into the localhost 25 it reports:

    Connected to
    Escape character is '^]'
    Connection closed by foreign host.

    The latest entry in /var/log/mail.err reads:

    Sep 19 15:50:13 mail postfix/smtpd[26667]: fatal: no SASL authentication mechanims

    Help and patience greatly appreciated.
  2. pititis

    pititis Member


    Can you post the output from?:

    postconf |grep sasl

    doveconf |grep auth
  3. blinky

    blinky Member

    Output from postconf |grep sasl as requested:
    broken_sasl_auth_clients = yes
    cyrus_sasl_config_path =
    lmtp_sasl_auth_cache_name =
    lmtp_sasl_auth_cache_time = 90d
    lmtp_sasl_auth_enable = no
    lmtp_sasl_auth_soft_bounce = yes
    lmtp_sasl_mechanism_filter =
    lmtp_sasl_password_maps =
    lmtp_sasl_path =
    lmtp_sasl_security_options = noplaintext, noanonymous
    lmtp_sasl_tls_security_options = $lmtp_sasl_security_options
    lmtp_sasl_tls_verified_security_options = $lmtp_sasl_tls_security_options
    lmtp_sasl_type = cyrus
    proxy_write_maps = $smtp_sasl_auth_cache_name $lmtp_sasl_auth_cache_name $address_verify_map $postscreen_cache_map
    send_cyrus_sasl_authzid = no
    smtp_sasl_auth_cache_name =
    smtp_sasl_auth_cache_time = 90d
    smtp_sasl_auth_enable = no
    smtp_sasl_auth_soft_bounce = yes
    smtp_sasl_mechanism_filter =
    smtp_sasl_password_maps =
    smtp_sasl_path =
    smtp_sasl_security_options = noplaintext, noanonymous
    smtp_sasl_tls_security_options = $smtp_sasl_security_options
    smtp_sasl_tls_verified_security_options = $smtp_sasl_tls_security_options
    smtp_sasl_type = cyrus
    smtpd_recipient_restrictions = reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, check_policy_service inet:, permit
    smtpd_sasl_auth_enable = yes
    smtpd_sasl_authenticated_header = yes
    smtpd_sasl_exceptions_networks =
    smtpd_sasl_local_domain =
    smtpd_sasl_path = private/auth
    smtpd_sasl_security_options = noanonymous
    smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
    smtpd_sasl_type = dovecot
    smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, warn_if_reject reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_pipelining, permit

    Output from doveconf |grep auth as requested:
    I was unable to generate this file. The on-screen display reads:
    doveconf: Fatal: open (/etc/dovecot/dovecot.conf) failed: Permission denied.

    As I was not in a root terminal I issue the same command preceeded by sudo and the on-screen output is:
    doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/10-master.conf
    line 93: Unkown setting: service.

    The line it is referring to in 10-mater.conf is the service auth-worker {:

    service auth-worker {
    # Auth worker process is run as root by default, so that it can access
    # /etc/shadow. If this isn't necessary, the user should be changed to
    # $default_internal_user.
    user = root

  4. pititis

    pititis Member

    I think that you have a missing } or { in /etc/dovecot/conf.d/10-master.conf

    Re-check the changes you did.
  5. blinky

    blinky Member

    Good afternoon,

    The changes I made are EXACTLY as indicated on the instructions at: as I verified them when I first say the error.

    I did, however, add an exter } and the 10-master.conf now looks like this:
    #default_process_limit = 100
    #default_client_limit = 1000

    # Default VSZ (virtual memory size) limit for service processes. This is mainly
    # intended to catch and kill processes that leak memory before they eat up
    # everything.
    #default_vsz_limit = 256M

    # Login user is internally used by login processes. This is the most untrusted
    # user in Dovecot system. It shouldn't have access to anything at all.
    #default_login_user = dovenull

    # Internal user is used by unprivileged processes. It should be separate from
    # login user, so that login processes can't disturb other processes.
    #default_internal_user = dovecot

    service imap-login {
    inet_listener imap {
    #port = 143
    inet_listener imaps {
    #port = 993
    #ssl = yes

    # Number of connections to handle before starting a new process. Typically
    # the only useful values are 0 (unlimited) or 1. 1 is more secure, but 0
    # is faster. <doc/wiki/LoginProcess.txt>
    #service_count = 1

    # Number of processes to always keep waiting for more connections.
    #process_min_avail = 0

    # If you set service_count=0, you probably need to grow this.
    #vsz_limit = 64M

    service pop3-login {
    inet_listener pop3 {
    #port = 110
    inet_listener pop3s {
    #port = 995
    #ssl = yes

    service lmtp {
    unix_listener lmtp {
    #mode = 0666

    # Create inet listener only if you can't use the above UNIX socket
    #inet_listener lmtp {
    # Avoid making LMTP visible for the entire internet
    #address =
    #port =

    service imap {
    # Most of the memory goes to mmap()ing files. You may need to increase this
    # limit if you have huge mailboxes.
    #vsz_limit = 256M

    # Max. number of IMAP processes (connections)
    #process_limit = 1024

    service pop3 {
    # Max. number of POP3 processes (connections)
    #process_limit = 1024

    service auth {
    # auth_socket_path points to this userdb socket by default. It's typically
    # used by dovecot-lda, doveadm, possibly imap process, etc. Its default
    # permissions make it readable only by root, but you may need to relax these
    # permissions. Users that have access to this socket are able to get a list
    # of all usernames and get results of everyone's userdb lookups.
    unix_listener auth-userdb {
    mode = 0600
    user = vmail
    group = mail

    unix_listener /var/spool/postfix/private/auth {
    mode = 0660
    user = postfix
    group = postfix

    service auth-worker {
    # Auth worker process is run as root by default, so that it can access
    # /etc/shadow. If this isn't necessary, the user should be changed to
    # $default_internal_user.
    user = root

    service dict {
    # If dict proxy is used, mail processes should have access to its socket.
    # For example: mode=0660, group=vmail and global mail_access_groups=vmail
    unix_listener dict {
    #mode = 0600
    #user =
    #group =

    As requested, the contents of doveconf |grep auth are as follows:
    auth_anonymous_username = anonymous
    auth_cache_negative_ttl = 1 hours
    auth_cache_size = 0
    auth_cache_ttl = 1 hours
    auth_debug = yes
    auth_debug_passwords = yes
    auth_default_realm =
    auth_failure_delay = 2 secs
    auth_first_valid_uid = 500
    auth_gssapi_hostname =
    auth_krb5_keytab =
    auth_last_valid_uid = 0
    auth_master_user_separator =
    auth_mechanisms = plain login
    auth_realms =
    auth_socket_path = auth-userdb
    auth_ssl_require_client_cert = no
    auth_ssl_username_from_cert = no
    auth_use_winbind = no
    auth_username_chars = abc[email protected]
    auth_username_format =
    auth_username_translation =
    auth_verbose = yes
    auth_verbose_passwords = plain
    auth_winbind_helper_path = /usr/bin/ntlm_auth
    auth_worker_max_count = 30
    disable_plaintext_auth = yes
    unix_listener anvil-auth-penalty {
    service auth-worker {
    executable = auth -w
    unix_listener auth-worker {
    service auth {
    executable = auth
    unix_listener /var/spool/postfix/private/auth {
    unix_listener auth-client {
    unix_listener auth-login {
    unix_listener auth-master {
    unix_listener auth-userdb {

    The good news is that I am now able to telnet localhost 25

    And it appears as though mail is created when I do so off the command line in terminal mode but it doesn't seem to go anywhere.

    Stuck again... :-( ... but optimistic the knowledgeable folk in here will come to my rescue. :)
  6. pititis

    pititis Member

    ok :)

    And now what is in mail.log?
  7. blinky

    blinky Member

    There is nothing in the mail log.

    /var/log/mail.log is a 0 byte file.

    There is, however, a message sitting in the mail queue which I just created. Output of "sudo mailq" as follows:

    -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
    D08DF520364 197 Thu Sep 20 16:29:20 [email protected]
    (mail transport unavailable)
    [email protected]

    -- 0 Kbytes in 1 Request.
  8. pititis

    pititis Member

  9. blinky

    blinky Member

    I'd really like to try to resolve this installation to determine where I went wrong. I expect I'll make lots of mistakes along the way.

    The problem with /var/log/mail.log was entirely mine. I deleted it. Then I recreated it which is why it was a 0 byte file. Then I did some more research.

    If I'm on the right path now I should have recreated it with:

    touch /var/log/mail.log

    But of course it's still empty.

    You mention ISPConfig as an option. Will that involve a total reinstall? I'm just not sure the GUI interface will be as friendly to my screen reader as working directly off the command-line. (Rember, I have a severe visual impairment so am using a screen reader to read everything.)

    You can't believe the time I've already put into this. Not that I mind... that's what it's all about. Just doing it because it seems like somethhing that is there to be done.

    If you're unable to help any further understandable... perhaps someone else can jump in.

    Thanking you again for any help you can give.
  10. blinky

    blinky Member

    Once that single missing "}" was noticed in the dovecot config file it seemed to solve the first problem.

    I was then able to [colour=blue]telnet localhost 25[/color] and send out mail. Unfortunately, it was stuck in the mail queue and not going anywhere.

    After much time on Google I discovered someone else having a similar problem.

    I commnented out the line:
    content_filter=amavis:[]:10024 in /etc/postfix/

    ran the "postsuper -r ALL" to re-queue the mail and it was sent out just fine.

    One step closer but that's it for this evening.... this is exhausting!

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