zimbra SASL Auth Fail

[Kamal Patel]

Hello Experts,

Please Guide me. how to fix such problem on Zimbra Mail server. It occurs Frequently.

16:59:43 mail saslauthd[22166]: auth_zimbra: kristian auth failed: authentication failed for [kristian]

16:59:43 mail saslauthd[22166]: do_auth         : auth failure: [user=kristian] [service=smtp] [realm=] [mech=zimbra] [reason=Unknown]

16:59:43 mail postfix/smtpd[9942]: warning: sprycel.arvixecloud.com[108.175.157.253]: SASL LOGIN authentication failed: authentication failure

16:59:43 mail postfix/smtpd[9942]: disconnect from sprycel.arvixecloud.com[108.175.157.253]

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Thanks & Regards,

  Kamal Patel

 [RHCSA,RHCE]

[Nimit Gajjar]

This could be happen for password changed.
Or blocked by provider

Nimit Gajjar

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[Kamal Patel]

Thanks for reply Nimit,

Every time Zimbra log changed and shows SASL Auth with Different Username from same IP and same domain [ sprycel.arvixecloud.com[108.175.157.253] ],

Can you Please Help me how to fix such problem, This IP and Domain are unknown.