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Thread: [SOLVED] My email server are spamming

  1. #1
    MrDin is offline Starter Member
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    Unhappy [SOLVED] My email server are spamming

    Hi all,

    From my daily generated mail report, i always notice that most of 'most active sender' aren't from user account. Below senders are definitely not from my email user. It's like my server are sending spam.

    Most active senders
    14 jquijada@tecnoconsult.com
    9 jrandall@theemploymentguide.com
    8 jrapoport@exponent.com
    8 jqzvuesw@investors.com
    8 jradwich@isurusmrc.com
    8 jr@griffinbrothers.com
    8 jramos@ranido.com
    8 jr@jrtr.org
    8 jquagliano@quagseeg.com
    7 jr@proactivenet.com
    5 enewsletter@eNewsletter.com.my
    5 jraines@pfeiffer.edu
    5 jr.jvalentine@tyrekamins.com
    5 jquire@dcr.net
    5 jramirez@kcmsd.net
    4 webmaster@edirectadvertising.com
    4 jradwanska@nfz-katowice.pl
    2 root@mail.scriptlance.com
    2 DEMSBOUNCE@HERBATEK.COM
    2 jraine68@avantages.net
    2 hlebroking@hlgs.hongleong.com.my
    2 susanlim88@gmail.com
    2 dhatz@phaistosnetworks.gr
    2 kamaruz@aeroscan.com.my
    1 iejwkfswi@bps8.ebay.sun.com
    1 lam@qnsr.com
    1 kucinskw@curryyoung.com
    1 jrabb@sympatico.ca
    1 phineas@465.com
    1 DoramollieSelf@britneyspears.ac
    1 sentto-17701015-4261-1194690048-iman=two-p.com@returns.groups.yahoo.com
    1 codruta24ro@onebb.net
    1 DoreeninkHutchison@switchboard.com
    1 lowautroldun@autrol.com
    1 gair@surecom.com
    1 Sheree_cuff@accordions.com
    1 tein@icqmail.com
    1 broderick@msn.com
    1 Darlene-Gyorky@asimijewelry.com
    1 doan9@uk.psi.com
    1 prof.solludo4q@hotmail.com
    1 csupport@dotster.com
    1 a1a98687@spicergroup.com
    1 Kilcorse@gaol.org.uk
    1 maceo@datentechnik.com
    1 SheliamonasticMcneal@porscheclub.com
    1 pettigrew@texolite.com

    I'm not sure what this mean. Please help

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by MrDin View Post
    Hi all,

    From my daily generated mail report, i always notice that most of 'most active sender' aren't from user account. Below senders are definitely not from my email user. It's like my server are sending spam.
    No, they're not sending spam from your server. Zimbra is not an open relay by default. They are addresses that are sending to you not from your server.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    MrDin is offline Starter Member
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    Bro, thanks for your reply. It a great help.

  4. #4
    preem is offline Active Member
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    I have had a lot of unknown senders too, and it bothered me as much as it bothers you.

    Take a look at this thread it helped me a lot, i reduced spam for, i dunno, 90%.

  5. #5
    mmorse's Avatar
    mmorse is offline Moderator
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    Though going beyond your original question...if you need to cut down spam there's also:

    host checks:
    reject_invalid_hostname
    reject_non_fqdn_hostname
    reject_non_fqdn_sender

    dns checks:
    reject_unknown_client
    reject_unknown_hostname
    reject_unknown_sender_domain
    -careful with reject_unknown_client & reject_unknown_hostname as they can block more than you think sometimes...

    Set them in the admin console > global settings > mta tab
    or via CLI:
    Code:
    zmprov mcf +zimbraMtaRestriction reject_invalid_hostname
    You might also change the entry in zmmta.cf for smtpd_reject_unlisted_recipients to 'yes', save the file and restart postfix. (postfix reload)

    Besides sbl.spamhaus.org or zen.spamhaus.org some other rbl's include:
    dnsbl.njabl.org
    cbl.abuseat.org
    bl.spamcop.net
    dnsbl.sorbs.net
    you can enable them by:
    Code:
    zmprov mcf +zimbraMtaRestriction "reject_rbl_client bl.spamcop.net"
    That's just some quick basics, there's dozens of other threads on reducing spam if you search a bit, and the good stuff goes into a wiki article: Improving Anti-spam system - Zimbra :: Wiki
    Last edited by mmorse; 11-12-2007 at 10:01 AM.

  6. #6
    uscell's Avatar
    uscell is offline Senior Member
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    thanks, same i was looking for ...

    Yukari !!!
    Yukari !!!!
    +91 982 503 9118
    -----------------------------
    Release 6.0.2_GA_1912.RHEL5_64_20091020161509RHEL5_64 FOSS edition.

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