For some reason, yesterday an issue appeared that prevented me and my users from logging in. When I try to log in through the normal web portal, it gives me this kind of error : "A network service error has occurred.". But when I try to log in the admin interface, no matter the password, I get this kind of error "Authentication Failed".
As soon as I restart, the problem disapppears but come back a few hours later.
cat /opt/zimbra/log/nginx.log returns me this kind of errors :
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2019/08/13 08:08:43 [warn] 4067#0: *627 zmauth: an error occurs during zm lookup: com.zimbra.common.service.ServiceException: system failure: unable to lookup account via query: (&(|(zimbraMailDeliveryAddress=[ADDRESS EXPUNGED])(zimbraMailAlias=[ADDRESS EXPUNGED])(zimbraOldMailAddress=[ADDRESS EXPUNGED]))(objectClass=zimbraAccount)) message: system failure: unable to lookup COS by name: default message: LDAP error: - unable to get attributes: ldap host=[DOMAIN EXPUNGED]:389: internal error ExceptionId:qtp66233253-1401:https:https://[IP EXPUNGED]/service/extension/nginx-lookup:1565676523054:c85a4b0af3b3c79e Code:service.FAILURE, fall back to IPHASH to get the upstream route while SSL handshaking to lookup handler, client: [IP EXPUNGED], server: [DOMAIN EXPUNGED], request: "PROPFIND /principals/users/[ADDRESS EXPUNGED]/ HTTP/1.1", host: "[DOMAIN EXPUNGED]"
2019/08/13 08:08:43 [error] 4067#0: *627 zm lookup: an error is returned by zimbra lookup handler: unable to search LDAP while SSL handshaking to lookup handler, client: [IP EXPUNGED], server: [DOMAIN EXPUNGED], request: "PROPFIND /dav/[ADDRESS EXPUNGED]/ HTTP/1.1", host: "[DOMAIN EXPUNGED]"
and this warning pops seemly often on /var/log/zimbra.log :
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Aug 13 09:38:14 mail2 postfix/proxymap: warning: dict_ldap_connect: Unable to bind to server ldap://[DOMAIN EXPUNGED]:389 with dn uid=zmpostfix,cn=appaccts,cn=zimbra: 80 (Other (e.g., implementation specific) error)
Aug 13 09:38:14 mail2 postfix/cleanup: warning: proxy:ldap:/opt/zimbra/conf/ldap-canonical.cf lookup error for "[ADDRESS EXPUNGED]"
so right now im kinda lost :/
what should I do ?
what kind of other logs should I provide ?