IBM created APAR PH66548 to solve this issue...
On 5/3/2025 8:15 AM, Ed Jaffe wrote:
I don't know how many of you prevent PTFs with ACTION or DOC HOLDs
from being applied until after you read and fully understand them, but
if you're busy and are prone to applying first and reading later, this
post might be for you.
We applied the subject PTF last week to our "production" z/OS 3.1
system, and a few days later realized CSSMTP could not send email. At
first we weren't sure why, so we went through our usual diagnostics.
Eventually, we inspected recent maintenance and saw both ACTION and
DOC HOLDs against UO02745 documenting a serious impact to CSSMTP. We
restored the PTF and magically CSSMTP started working again.
Obviously, we have some deep reading and some configuring to do. In
the meantime, we put a USER HOLD on that PTF to prevent it being
accidentally applied before we're ready...
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