Can you use something like the following to validate the domain and just substitute gmail.com for the customers' domain?
SELECT IP_ADDRESS as "IP Address"
FROM table(QSYS2.DNS_LOOKUP('gmail.com'));
________________________________
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> on behalf of Rob Berendt <robertowenberendt@xxxxxxxxx>
Sent: Tuesday, April 7, 2026 7:59 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: ISO service which will return a mail domain as valid or not.
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You send an email and you get a
Reason: 5.1.2 - Bad destination host ('000', ['DNS Hard Error looking up
aasdfdfsdf9788asfdsf8d87f8d.com (MX): NXDomain'])
You decide to get proactive and scrub a file containing all these
destination addresses. You want to run something like
select customer_number, customer_name, email_address,
email_domain_valid(email_address)
from customer_master
where email_domain_valid(email_address) = '0'
Does anyone have something like the desired email_domain_valid?
I can worry about the performance later (like grouping by domain names, a
list of whitelisted domain names, etc) So let's not chase that squirrel.
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