Postfix mail server. Please help

Discussion in 'Server Operation' started by Scott.Paananen, Feb 15, 2011.

  1. Scott.Paananen

    Scott.Paananen New Member

    Hi everyone,
    I am new to postfix, and i am having an issue.
    We are not able to get mail from a certain company, our post fix logs show the following.

    Note: i've removed personal information from the logs

    Feb 14 15:10:54 SERVER02 postfix/smtpd[20199]: connect from mail.example.net[xx.xx.xxx.xxx]
    Feb 14 15:11:10 SERVER02 postfix/policy-spf[20201]: handler sender_policy_framework: is decisive.
    Feb 14 15:11:10 SERVER02 postfix/policy-spf[20201]: : Policy action=DEFER_IF_PERMIT SPF-Result=mail-server.eaxmple.net: 'SERVFAIL' error on DNS 'SPF' lookup of 'mail-server.eaxmple.net'
    Feb 14 15:11:10 SERVER02 postfix/smtpd[20199]: warning: restriction `smtpd_data_restrictions' after `permit' is ignored
    Feb 14 15:11:10 SERVER02 postfix/smtpd[20199]: NOQUEUE: reject: RCPT from mail.eaxmple.net[xx.xx.xxx.xxx]: 450 4.7.1 <me@us.com>: Recipient address rejected: SPF-Result=mail-server.eaxmple.net: 'SERVFAIL' error on DNS 'SPF' lookup of 'mail-server.eaxmple.net'; from=<them@example.net> to=<me@us.com> proto=ESMTP helo=<mail-server.eaxmple.net>
    Feb 14 15:11:11 SERVER02 postfix/smtpd[20199]: disconnect from mail.example.net[xx.xx.xxx.xxx]


    Now, their front end mail server is mail.example.net and their new back end server is mail-server.eaxmple.com

    The first thing i noticed was the misspelling of their domain name in the mail-server (mail-server.eaxmple.com) So i told the it, was thier issue, and not ours. The problem is this.

    eaxmple.net is in the domain example.net, The mistake was made a while ago, and never fixed.

    Is there anyway i can get postfix to allow mail from this company with out them fixing their problem, as it they claim it is our problem.

    here is a copy of my postfix config.


    # Requirements for the HELO statement
    smtpd_helo_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_hostname, reject_invalid_hostname, permit
    # Requirements for the sender details
    smtpd_sender_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_pipelining, permit
    # Requirements for the connecting server
    smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org, reject_rbl_client blackholes.easynet.nl, reject_rbl_client dnsbl.njabl.org
    # Requirement for the recipient address
    smtpd_recipient_restrictions = reject_unauth_pipelining, permit_mynetworks, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, check_policy_service unix:private/policy, check_policy_service inet:127.0.0.1:2525, permit smtpd_data_restrictions = reject_unauth_pipelining

    # require proper helo at connections
    smtpd_helo_required = yes


    Can someone please help me out?
    Apperenlty, we are the only place they can not send mail to, and I would like to make a work around so we can receive mail from them without waiting on them to fix thier problem.

    Thank you in advance.
     
  2. Hans

    Hans Moderator Moderator HowtoForge Supporter ISPConfig Developer

    Hi You've implemented SPF within Postfix which is fine.
    Ik think the email of the sender can not pass as it seems that their domain DNS-settings does not contain a SPF-record.

    If they define a SPF-record, i do think email will pass through.
    So this is the best option.

    The other possibility is that you remove the line:
    check_policy_service unix:private/policy from your Postfix configuration file and restart Postfix afterwards.
    In that case your system does not check for SPF-records anymore, but i don't recommend that.
     

Share This Page