Network Service Error has occurred

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Network Service Error has occurred due to suspended IP addresses

   KB 23283        Last updated on 2018-05-15  




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Problem

The webclient shows "HTTP/1.1 503 Service Unavailable", and the /opt/zimbra/log/mailbox.log file has the following error:

2016-06-02 10:15:33,436 INFO  [qtp509886383-1033602:http://127.0.0.1:80/service/soap/AuthRequest] [] misc - Access to IP 10.10.10.3suspended, for repeated failed login.
2016-06-02 10:15:33,437 WARN  [qtp509886383-1033601:https://63.237.45.232:443/zimbra/] [] webclient - system failure: error while proxying request to target server: HTTP/1.1 503 Service Unavailable
com.zimbra.common.service.ServiceException: system failure: error while proxying request to target server: HTTP/1.1 503 Service Unavailable

Solution

White-list the IP addresses:

su - zimbra
zmprov mcf +zimbraHttpThrottleSafeIPs 10.1.2.3/32
zmprov mcf +zimbraHttpThrottleSafeIPs 192.168.4.0/24

If whitelisting isn't possible, disable the DoS filter for the repeated login failure:

su - zimbra
zmprov mcf zimbraInvalidLoginFilterMaxFailedLogin 0

Then restart the mailbox services to reflect the changes:

zmmailboxdctl restart


Submitted by: Sourabh Bhushan

Verified Against: ZCS 8.8, 8.7 Date Created: 2018-08-08
Article ID: https://wiki.zimbra.com/index.php?title=Network_Service_Error_has_occurred Date Modified: 2018-05-15



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