Email can not be delivered to quarantine

Products

• Messaging Gateway

Issue/Introduction

Emails are detected as spam by SMG and action for Spam policy is ‘Hold message in Spam Quarantine’, however delivery to the Quarantine Folder failed unexpected.

 

Cause

While doing telnet testing to Controlcenter port 41025, connection closed by foreign host.

[[email protected] root]# telnet 210.82.82.82 41025
Trying 210.82.82.82...
Connected to 210.82.82.82.
Escape character is '^]'.
220 SMTP service ready
helo a
250 OK
mail from:[email protected]
250 OK
rcpt to:[email protected]
250 OK
data
354 Start mail input; end with <CRLF>.<CRLF>
subject:shutdown the ldap server and try drop msg to quarantine
failure is expected.
done
.
421 Closing Connection
Connection closed by foreign host.

Below error can be seen from BrightmailLog.log:
ERROR - netscape.loda.LDAPException: failed to connect to server ldap://10.0.16.144:389
ERROR - Attempt to resolve [email protected] failed due to LDAP server error
ERROR - Resolving email alias for : [email protected] failed to connnect to server ldap://10.0.16.144:389

Ldap server unreachable is the root cause for hold message to quarantine failure.
 

Resolution

Customer need to recover the communication between SMG and LDAP source.

Workaround is to disable LDAP source in SMG.