[Faccus] SERVICE ALERT - 2014-10-16 mailservices, Exchange - uwaterloo.ca mail lookup failure

jbgorrie at uwaterloo.ca jbgorrie at uwaterloo.ca
Fri Oct 17 07:45:47 EDT 2014



Description:     uwaterloo.ca mail lookup failure

Date: (YYYY-MM-DD)     2014-10-16

Start Time:              15:40

End Time:	16:40	

Impact:           LDAP lookups / mail bounces

Resolution:     Reinitialized corrupt LDAP database

Submitted By: jbgorrie at uwaterloo.ca

Comment:        One of the 6 LDAP slaves had database issues.  When alerted staff removed the node from the cluster and then fixed the issue.
During the period before it was removed some mail to valid campus addresses would have bounced.  The sender would receive a bounce and should now try again.

Example bounce message is below
=====================================
Action: failed
Status: 5.1.1
Remote-MTA: DNS; mxer.uwaterloo.ca
Diagnostic-Code: SMTP; 550 5.1.1 <XXXXXXXXX at uwaterloo.ca>... User unknown

Notice Submitted:    Fri Oct 17 7:45:47 EDT 2014

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Note:   If you have any questions or concerns please contact the IST Service Desk (CHIP) at ext: 84357 or helpdesk at uwaterloo.ca



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