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Thread: SMTP Authorisation isn't working anymore

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  1. #1
    Join Date
    Nov 2012
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    Default [SOLVED] SMTP Authorisation isn't working anymore

    Hi all,

    I'm running now zimbra since approx 3 years without any problems… Now I have a really strange issue I can't fix.

    Everything runs smooth when using the webclient. But when I'm using the IMAP client wherever I can get my mails, but I can't send… The following is in the zimbra.log…

    Nov 21 14:19:25 zimbra postfix/smtpd[6321]: connect from < client >
    Nov 21 14:19:25 zimbra postfix/smtpd[6321]: setting up TLS connection from < client >
    Nov 21 14:19:25 zimbra postfix/smtpd[6321]: Anonymous TLS connection established from < client >: TLSv1 with cipher AES128-SHA (128/128 bits)
    Nov 21 14:19:25 zimbra saslauthd[31180]: zmauth: authenticating against elected url 'https://zimbra.domain.com:7071/service/admin/soap/' ...
    Nov 21 14:19:25 zimbra saslauthd[31180]: authentication against url 'https://zimbra.domain.com:7071/service/admin/soap/' caused error 'curl_easy_perform: error(56): Received HTTP code 403 from proxy after CONNECT'
    Nov 21 14:19:25 zimbra saslauthd[31180]: url 'https://zimbra.domain.com:7071/service/admin/soap/' will not be used for (at least) 600 seconds
    Nov 21 14:19:25 zimbra saslauthd[31180]: Authentication cycle re-elected url https://zimbra.domain.com:7071/service/admin/soap/, giving up ...
    Nov 21 14:19:25 zimbra saslauthd[31180]: auth_zimbra: user@domain.com auth failed: curl_easy_perform: error(56): Received HTTP code 403 from proxy after CONNECT
    Nov 21 14:19:25 zimbra saslauthd[31180]: do_auth : auth failure: [user=user@domain.com] [service=smtp] [realm=domain.com] [mech=zimbra] [reason=Unknown]
    Nov 21 14:19:25 zimbra postfix/smtpd[6321]: warning: SASL authentication failure: Password verification failed
    Nov 21 14:19:25 zimbra postfix/smtpd[6321]: warning: < client >: SASL PLAIN authentication failed: authentication failure
    Nov 21 14:19:25 zimbra postfix/smtpd[6321]: lost connection after AUTH from < client >

    This worked some days before… I've updated from 7.2.0 to 7.2.1, hoping this would fix the issue. But I simply can't explain why this isn't working:

    # zmprov getServer `zmhostname`| grep Auth
    zimbraMtaAuthEnabled: TRUE
    zimbraMtaAuthHost: zimbra.domain.com
    zimbraMtaAuthTarget: TRUE
    zimbraMtaAuthURL: https://zimbra.domain.com:443/service/soap/
    zimbraMtaSaslAuthEnable: yes
    zimbraMtaTlsAuthOnly: TRUE

    The SSL certificate can't be the problem, this is still valid:

    # mcertmgr viewdeployedcrt
    ::service mta::
    notBefore=Feb 22 14:54:24 2011 GMT
    notAfter=Feb 22 14:54:24 2014 GMT
    subject= /CN=*.domain.com/emailAddress=mail@domain.com
    SubjectAltName= domain.com, *.domain.com
    ( same cert for every service )

    Are there any more logging informations, why this authentication request fails?

    I would be glad if someone could help me... Thanks in advance..
    Last edited by Adrian Barone; 11-26-2012 at 08:29 AM. Reason: problem solved

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