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Thread: [SOLVED] Problem when receiving

  1. #1
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    Default [SOLVED] Problem when receiving

    Hi There I'm a Zimbra And Linux Newb I have installed Zimbra 5 on OpenSuse 10.3 and it works fine for the most part but when receiving mail from certain addresses the mail gets rejected when i look in the maillog i get the following error:
    450 4.7.1 CLient host rejected: Cannot find your hostname.
    and other times
    450 4.7.1 Hello command rejected: Host not found;

    I've been searching the web for weeks to no avail. please any help will be appreciated

  2. #2
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    Default

    Hi and welcome,

    Go into your admin GUI and have a look at Global Settings > MTA tab and see if you have the options "Client's IP address (reject_unknown_client)" and "Hostname in greeting (reject_unknown_hostname)" checked. Uncheck them and these errors should go away. These are anti-spam features that unfortunately reject a certain amount of otherwise-legitimate email if the sender's servers aren't configured up to standard. A lot of us turn them off.
    Cheers,

    Dan

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    Default Already Checked

    I have checked that already and neither of them are ticked. Is it maybe possible that these are still active even though they aren't checked in AdminIU?

    Thanks anyway

  4. #4
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    Quote Originally Posted by isewizz View Post
    I have checked that already and neither of them are ticked. Is it maybe possible that these are still active even though they aren't checked in AdminIU?

    Thanks anyway
    Improbable, but not impossible. Go to your command line, su as zimbra, then
    Code:
    zmprov gacf | grep zimbraMtaRestriction
    and it'll show you what restrictions are active. Post the result back here if it's weird.
    Cheers,

    Dan

  5. #5
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    Default

    Some earlier versions would not leave these boxes checked in the admin GUI. There were one or two postings to this effect. They are check though in the latest version - 5.0.5.

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    Quote Originally Posted by Bill Brock View Post
    Some earlier versions would not leave these boxes checked in the admin GUI. There were one or two postings to this effect. They are check though in the latest version - 5.0.5.
    Which brings up a very good point (thanks Bill!): what version are you on? If you post your version number in your user profile it keeps us from asking dumb questions, or answering your reasonable questions with dumb answers (at least some of the time)
    Cheers,

    Dan

  7. #7
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    Hey I've just updated my profile sorry about that. Anyway i use ZCS 5.0.1

    Ok here is the output that I got

    zimbraMtaRestriction : reject_invalid_hostname
    zimbraMtaRestriction : reject_non_fqdn_sender
    zimbraMtaRestriction : reject_unknown_client
    zimbraMtaRestriction : reject_unknown_hostname
    zimbraMtaRestriction : reject_unknown_sender_domain

    so from this it is clear that it is being rejected and is still active but again none of this is ticked in adminUI

  8. #8
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    Default

    Let's try:
    zmprov mcf -zimbraMtaRestriction commandYouWantToRemove

  9. #9
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    Thanks mmorse that solved the problem right away. You're a Genius. LOL
    Anyway thanks Again

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