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Thread: postfix + courierPOP3 / Outlook pc problem

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    Angry postfix + courierPOP3 / Outlook pc problem

    I've a Debian mail server with Postfix and courier for pop3 connection,

    when I try to connect on a pc outlook fault with error 0x800ccc90
    Mac users are ok, and I've already Imap port thath works fine.

    I've tried to change iptables rules, postfix conf and courier conf, but the error remain.

    There aren't errors in the logs files, but If I run netstat I see a TIME WAIT on tcp6,
    I think that some outlook versions try to use IPV6 connections or some different type of authentications, and this is the problem.



    #postfix conf

    Code:
    alias_database = hash:/etc/aliases
    alias_maps = hash:/etc/aliases, proxy:mysql:/etc/postfix/mysql/aliases
    biff = no
    body_checks = regexp:/etc/postfix/body_checks
    broken_sasl_auth_clients = yes
    command_directory = /usr/sbin
    config_directory = /etc/postfix
    content_filter = smtp-amavis:[127.0.0.1]:10024
    daemon_directory = //usr/lib/postfix
    data_directory = /var/lib/postfix
    debug_peer_level = 2
    default_destination_concurrency_limit = 1
    empty_address_recipient = MAILER-DAEMON
    header_checks = regexp:/etc/postfix/header_checks
    home_mailbox = .maildir/
    inet_interfaces = xxx.xx.xxx.118, 127.0.0.1
    local_destination_concurrency_limit = 2
    mail_owner = postfix
    mail_spool_directory = /var/spool/mail
    mailq_path = /usr/bin/mailq
    manpage_directory = /usr/share/man
    message_size_limit = 25600000
    mydestination = localhost $myhostname
    mydomain = mydomain.it
    myhostname = mx1.mydomain.it
    mynetworks = 127.0.0.0/8, xxx.xx.xxx.118, xxx.xx.xxx.168, xxx.xx.xxx.143, xxx.xx.xxx.189, xxx.xx.xxx.99
    myorigin = $myhostname
    newaliases_path = /usr/bin/newaliases
    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
    queue_directory = /var/spool/postfix
    queue_minfree = 120000000
    recipient_delimiter = +
    relay_domains = proxy:mysql:/etc/postfix/mysql/relay_domains
    sample_directory = /etc/postfix
    sendmail_path = /usr/sbin/sendmail
    setgid_group = postdrop
    smtp_tls_note_starttls_offer = yes
    smtp_use_tls = yes
    smtpd_banner = $myhostname ESMTP $mail_name
    smtpd_client_restrictions = permit_mynetworks,    permit_sasl_authenticated,    reject_unknown_client,    reject_rbl_client zen.spamhaus.org
    smtpd_helo_required = yes
    smtpd_helo_restrictions = permit_mynetworks,    permit_sasl_authenticated,    reject_invalid_helo_hostname,    reject_non_fqdn_helo_hostname
    smtpd_recipient_restrictions = permit_mynetworks,    permit_sasl_authenticated,    reject_non_fqdn_hostname,    reject_non_fqdn_sender,    reject_non_fqdn_recipient,    reject_unauth_destination,    reject_unauth_pipelining,    reject_invalid_hostname,    check_policy_service inet:127.0.0.1:10030,    reject_rbl_client zen.spamhaus.org
    smtpd_reject_unlisted_recipient = yes
    smtpd_reject_unlisted_sender = yes
    smtpd_sasl_auth_enable = yes
    smtpd_sasl_local_domain = $mydomain
    smtpd_sasl_path = smtpd
    smtpd_sasl_security_options = noanonymous
    smtpd_sender_restrictions = reject_unknown_sender_domain
    smtpd_tls_CAfile = /etc/ssl/private/intermediate.pem
    smtpd_tls_auth_only = yes
    smtpd_tls_cert_file = /etc/ssl/private/*.mydomain.it.crt
    smtpd_tls_key_file = /etc/ssl/private/*.mydomain.it.key
    smtpd_tls_loglevel = 1
    smtpd_tls_received_header = yes
    smtpd_tls_session_cache_timeout = 3600s
    smtpd_use_tls = yes
    soft_bounce = no
    strict_rfc821_envelopes = no
    tls_random_source = dev:/dev/urandom
    transport_maps = proxy:mysql:/etc/postfix/mysql/transport_maps, proxy:mysql:/etc/postfix/mysql/autoreply_domains
    unknown_local_recipient_reject_code = 550
    virtual_alias_maps = proxy:mysql:/etc/postfix/mysql/virtual_alias_maps, proxy:mysql:/etc/postfix/mysql/autoreply_aliases
    virtual_gid_maps = static:999
    virtual_mailbox_base = /home/vmail
    virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql/virtual_mailbox_domains
    virtual_mailbox_limit = 2097152000
    virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql/virtual_mailbox_maps, proxy:mysql:/etc/postfix/mysql/virtual_mailbox_exts
    virtual_minimum_uid = 999
    virtual_uid_maps = static:999

    iptables conf
    Code:
    Chain INPUT (policy DROP 0 packets, 0 bytes)
    ....
    ....
    10779 1672K ACCEPT     tcp  --  *      *       0.0.0.0/0            xxx.xxx.xxx.xx      tcp spts:1024:65535 dpt:143 state NEW,ESTABLISHED 
        0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            178.79.185.118      tcp spts:1024:65535 dpt:110 state NEW,ESTABLISHED 
    
    
    Chain OUTPUT (policy DROP 3 packets, 313 bytes)
    ....
    20870   75M ACCEPT     tcp  --  *      *       xxx.xxx.xxx.xx       0.0.0.0/0           tcp spt:110 dpts:1024:65535 state ESTABLISHED 
    12622   14M ACCEPT     tcp  --  *      *       xxx.xxx.xxx.xx       0.0.0.0/0           tcp spt:143 dpts:1024:65535 state ESTABLISHED 
    
    ....
    Chain FORWARD (policy DROP 0 packets, 0 bytes)
     pkts bytes target     prot opt in     out     source               destination         
        0     0 ACCEPT     tcp  --  *      *       xxx.xxx.xxx.xx       0.0.0.0/0           tcp dpt:110
    Last edited by mediaexpert; 9th June 2012 at 04:44 PM. Reason: update

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