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PH61015: New Function - SMTP AUTH support for CSSMTP

A fix is available

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APAR status

  • Closed as new function.

Error description

  • New Function
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users of the IBM Communications Server for z/OS Version  *
    * 2 Releases 5 and z/OS 3.1 IP:CSSMTP                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * New Function - SMTP AUTH support for CSSMTP                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply PTF                                                    *
    ****************************************************************
    CSSMTP, the z/OS email client, is enhanced to support the SMTP
    AUTH command with username and password using the PLAIN and
    LOGIN authentication methods.
    

Problem conclusion

Temporary fix

Comments

  • CSSMTP, the z/OS email client, is enhanced to support the SMTP
    AUTH command with username and password using the PLAIN and
    LOGIN authentication methods. This provides a mechanism to allow
    mail servers to authenticate the originator of email.
    
    Note: The username and password used for SMTP AUTH are stored in
    a SAF LDAPBIND entity. RACF supports encrypting the LDAPBIND
    entity with AES-256 protection beginning in z/OS V2R5 with RACF
    APAR OA66458.
    
    To use SMTP AUTH support for CSSMTP, use the following
    references.
    
    - See the topic ?Steps for CSSMTP AUTH configuration?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=application-steps-c
    ssmtp-auth-configuration) in the z/OS Communications Server: IP
    Configuration Guide for the steps needed to configure CSSMTP to
    authenticate with the target server.
    - See the topic ?TargetServer statement?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=statements-targetse
    rver-statement) in the z/OS Communications Server: IP
    Configuration Reference for details on configuring the new
    AuthEntity parameter.
    - The EZARACF sample in the SEZAINST installation data set is
    updated to include a section on SMTP AUTH RACF Configuration.
    
    The following publications have been updated:
    
    - The topic ?Steps for CSSMTP AUTH configuration?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=application-steps-c
    ssmtp-auth-configuration) in the z/OS Communications Server: IP
    Configuration Guide is added to provide the steps needed to
    configure CSSMTP to authenticate with the target server.
    
    - The topic ?TargetServer statement?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=statements-targetse
    rver-statement) in the z/OS Communications Server: IP
    Configuration Reference is updated to provide details on
    configuring the new AuthEntity parameter.
    
    - The topic ?MODIFY command: Communications Server SMTP
    application (CSSMTP)?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=command-modify-comm
    unications-server-smtp-application-cssmtp) in the z/OS
    Communications Server: IP System Administrator's Commands is
    updated to show the new AUTHENTITY field in the MODIFY
    CSSMTP,DISPLAY,CONFIG report and the new AUTH STATE field in the
    MODIFY CSSMTP,DISPLAY,TARGETS report.
    
    - The topic ?Resolving mail problems related to SMTP Auth?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=problems-resolving-
    mail-related-smtp-auth) in the z/OS Communications Server: IP
    Diagnosis Guide is added to provide information on diagnosing
    problems related to CSSMTP?s support of SMTP AUTH.
    
    - The topic ?CSSMTP configuration record (CONFIG subtype 48)?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=records-cssmtp-conf
    iguration-record-config-subtype-48) in the z/OS Communications
    Server: IP Programmer's Guide and Reference is updated with new
    fields for the SMF 119 subtype 48 record. New fields defined
    include SMF119ML_CF_RptSysoutCls and SMF119ML_CF_MailbxCmptblty.
    New data added to configuration data section includes the
    ReportMailFrom setting and the AuthEntity setting for each
    target server.
    
    - The topic ?SMF type 1154, subtype 4 ? CSSMTP client compliance
    evidence record?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=t1sr-smf-type-1154-
    subtype-4-cssmtp-client-compliance-evidence-record) in the z/OS
    Communications Server: IP Programmer's Guide and Reference is
    updated with the new field, SMF1154_4_MLTS_Auth, for the SMF
    1154 subtype 4 record.
    
    - The topic ?SMTP AUTH support for CSSMTP?
    (https://www.ibm.com/docs/en/zos/3.1.0?topic=security-smtp-auth-
    support-cssmtp)in the z/OS Communications Server: New Function
    Summary is added.
    

APAR Information

  • APAR number

    PH61015

  • Reported component name

    TCP/IP MVS

  • Reported component ID

    5655HAL00

  • Reported release

    250

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    YesSpecatt / New Function / Xsystem

  • Submitted date

    2024-04-22

  • Closed date

    2025-04-07

  • Last modified date

    2025-05-02

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    UO02744 UO02745

Modules/Macros

  • EZAMLUXT EZAMLLRT EZAMLCFP EZAMLUTL EZATMAIL EZAMLCKP EZASMF
    EZAMLJSP EZAMLUDV EZA482   EZAMLSSI EZAMLEML EZAMLLOG EZAMLCON
    EZAMLMSG EZAMLJES EZASMF77 EZAMLSMT EZARACF  EZAMLCAT EZAMLHCK
    EZASM482 EZAMLSSR EZAMLJSU EZAMLSMF EZAMLERT EZAMLCFM EZAMLCFG
    EZAMLMN  EZAMLERR EZAMLRES EZAMLCNF
    

Fix information

  • Fixed component name

    TCP/IP MVS

  • Fixed component ID

    5655HAL00

Applicable component levels

  • R250 PSY UO02744

       UP25/04/17 P F504  

  • R310 PSY UO02745

       UP25/04/17 P F504  

Fix is available

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Document Information

Modified date:
05 May 2025