LO54747: ON AS400 CIDR ADDRESSES BLOCKS ARE NOT WORKING AS EXPECTED IN THE CONFIGURATION DOCUMENT.

APAR status

• Closed as user error.

Error description

• On the OS400 Running Domino 8.5.1 CIDR address's are not working
  as expected.
  -Customer is using CIDR address's to only allow mail from
  MXLogic
  -MXLogic is a 3rd party filter service.
  -Customer was provided a CIDR range from MXLogic. Here is an
  example of the type of address that was provided:
  192.168.1.250/21
  -The range was placed in the configuration document under
  Router/SMTP -->Restrictions and controls -->  SMTP inbound
  controls --> Inbound Connection Controls --> Allow connections
  only from the following SMTP internet hostnames/IP addresses-->
  IP range.
  -Only the ranges in the supper netted address should be allowed,
  this was not the case as any connecting host was allowed to
  connect and deposit mail/spam.
  -OS400 version is i5/OS release V5.R4
  -I tested this on the Windows 32bit platform and it worked as
  intended.
  -This issue is specific to the AS400 running 8.5.1
  -Earlier relases of Domino were not tested.
  

Local fix

• To work around this issue. We had to list list ranges wild
  carding the 4th octet ([192.168.1.*],[192.168.2.*]., etc). This
  produced a lot more entries.
  

Problem summary

Problem conclusion

Temporary fix

Comments

• This APAR is associated with SPR# JFBM89AFGK.
  The problem was caused by a user error.
  

APAR Information

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

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

Fix information

Applicable component levels