PM23400: CSSMTP GETTING 501 #5.5.2 SYNTAX ERROR FROM TARGET SERVER

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When CSSMTP sends the MAIL FROM or RCPT TO commands, there is a
  blank space between the > and the CRLF.  This is causing some
  target servers to flag this as a syntax error and fail the mail.
  .
  KEYWORDS: undeliverable 501 #5.5.2 syntax error
  .
  VERIFICATION STEPS:
  CSSMTP log will show the server fails the mail with:
  501 #5.5.2 syntax error 'mail from: <user@Mdomain.origin> '
  Note the blank space after the >
  .
  A packet trace will confirm CSSMTP is sending a blank space
  after the > and before the CRLF.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release(s) 11 and         *
  *                 12 IP: CSSMTP                                *
  ****************************************************************
  * PROBLEM DESCRIPTION: Trailing blank after the ">" character  *
  *                      caused target server to reject MAIL     *
  *                      FROM command.                           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The CSSMTP application added a trailing blank after the mailbox
  string in the SMTP MAIL FROM: and RCPT TO: commands.
  Although most SMTP servers tolerate extra whitespace as long as
  it does not appear within the mailbox string this target server
  did not. The following can be seen in the CSSMTP log file:
  
  501 #5.5.2 syntax error 'mail from: <user@Mdomain.origin> '
  Note the blank space after the >
  +-------------------------------------------------------------+
  + Please check our Communications Server for OS/390 homepages +
  + for common networking tips and fixes.  The URL for these    +
  + homepages can be found in Informational APAR II11334.       +
  +-------------------------------------------------------------+
  

Problem conclusion

• CSSMTP application has been modified to remove the trailing
  blank.
  
  * Cross Reference between External and Internal Names
  

Temporary fix

Comments

APAR Information

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

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

  UK61581 UK61582

Modules/Macros

• EZAMLJSU
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1B0 PSY UK61581

     UP10/12/01 P F011

• R1C0 PSY UK61582

     UP10/12/01 P F011

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.