IBM Support

EZA5135I Possible configuration conflict: RESOLVERUSAGE setting is YES and IPMAILERADDRESS is set

Question & Answer


Question

We are getting the following message in the SMTP started task log, and mail going outside of our domain is not getting to the external email address specified in IPMAILERADDRESS:

 EZA5135I Possible configuration conflict: RESOLVERUSAGE setting is YES and IPMAILERADDRESS is set.

Also, SMTP issued the following messages:

 EZA5473I date time Generating Note note_name as Error Notification for Undeliverable Mail                       
                             
 EZA5477E date time Unable to Deliver Note note name to printpath      

                                

We are running SMTP without using a DNS server.

Answer

The SMTP server's RESOLVERUSAGE statement indicates whether domain name resolution is to be used or not. Even if RESOLVERUSAGE is not coded in your SMTP configuration, it is set to YES by default.

Use the IPMAILERADDRESS statement to reroute mail that was sent to an unknown host and direct it to an SMTP server on an IP network rather than to a user on a local or NJE network. The specified server should have network connectivity and be able to perform name resolution.

Message EZA5135I alerts you to check if the RESOLVERUSAGE statement is set correctly. If your intention is to send all your mail to a specific address coded in IPMAILERADDRESS, then it is incorrect to set RESOLVERUSAGE to YES, or to let it default to YES. You must, in that case, specify NO on the RESOLVERUSAGE statement in the SMTP configuration file. All non-local mail destined for the IP network is then forwarded to the IP address specified in IPMAILERADDRESS.

By changing the RESOLVERUSAGE to NO, you eliminate the EZA5135I on the started task log of SMTP and permit successful transmission of the outbound email.

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSSN3L","label":"z\/OS Communications Server"},"Platform":[{"code":"PF035","label":"z\/OS"}],"Component":"","Version":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]

Product Synonym

ZOSCS COMMSERVER

Document Information

Modified date:
15 September 2016

UID

dwa1303638