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Thread: mailer-deamon deferred problem

  1. #1
    mrjohnsen is offline Senior Member
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    Default mailer-deamon deferred problem

    Hi,

    I have a ongoing supportcase about this but I could also use the community experience for this:

    We are experiencing a high amount of deferred emails by mailer-deamon which I think is caused by our customers use of domain aliases.

    We use this method to create domain alias:
    zmprov cd foobar.com zimbraDomainType alias
    zmprov md foobar.com zimbraMailCatchAllAddress @foobar.com zimbraMailCatchAllForwardingAddress @foo.com

    We have used this for a while for many customers and got a backscatter problem which got us to use the policy daemon, adviced by zimbra support:

    zmlocalconfig -e postfix_enable_smtpd_policyd=yes
    zmprov mcf +zimbraMtaRestriction "check_policy_service unixrivate/policy"

    We thought that would fix the problem but still we have a lot of deferred emails because of this. Here is an example today:
    Sep 29 14:53:00 zimbra01 postfix/qmgr[20233]: 65E771603D5: from=<noseoi2831@gvt.net.br>, size=3302, nrcpt=1 (queue active)
    Sep 29 14:53:00 zimbra01 postfix/smtp[3029]: 2BD7F1603CE: to=<gf@foo.com>, orig_to=<gf@foobar.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=1.5, delays=0.73/0/0.01/0.77, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=12557-12, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 65E771603D5)
    Sep 29 14:53:00 zimbra01 postfix/error[4343]: 65E771603D5: to=<gf@foo.com>, relay=none, delay=0.06, delays=0.02/0.01/0/0.03, dsn=5.0.0, status=bounced (foo.com)
    Sep 29 14:53:00 zimbra01 postfix/bounce[4344]: 65E771603D5: sender non-delivery notification: 73D651603D7
    Sep 29 14:53:00 zimbra01 postfix/qmgr[20233]: 65E771603D5: removed
    Sep 29 19:07:51 zimbra01 postfix/smtp[3254]: 73D651603D7: to=<noseoi2831@gvt.net.br>, relay=none, delay=15291, delays=15261/0.01/30/0, dsn=4.4.1, status=deferred (connect to mxin1.gvt.com.br[200.139.127.5]:25: Connection timed out)

    foobar.com is a domain alias to foo.com.

    I also tested this myself and when I send to nosuchuser@foobar.com (alias) i get a non delivery report, but when i send to the real domain nosuchuser@foo.com I get a reject which is what we want. Isn't the policy daemon working correctly? Anyone know how to fix this or have same experiences?


    Thanks in advance

  2. #2
    mrjohnsen is offline Senior Member
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    Default

    Hi again,
    I see in earlier forum posts that this was solved by adding the doman alias as a real domain and map 1:1 aliases for the users.

    http://www.zimbra.com/forums/adminis...d-domains.html

    This will be very time consuming for us to administrate our big customers wih user aliases instead of domain aliases.

    In the Zimbra wiki it seems like this was fixed so domain aliases can be safely used:
    Managing Domains - Zimbra :: Wiki

    "/opt/zimbra/conf/zmmta.cf smtpd_reject_unlisted_recipients 'yes' won't work with alias domains, so it's defaulted to no. However, 5.0.12+ contains a Policyd Daemon that helps those who host alias domains in ZCS"

    We use the policyd daemon but still we got all these NDRs.

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