We are running an application engine program that sends email to a list of users. In our Test Env, users are able to receive the emails but in our Prod environment, they do not. We are running the same program, and using the same stmp config. any idea on how to troubleshoot?

What OS and version? What program is used to send mail? What errors are you seeing in your messages file (or appropriate logging facility for your OS)?

We have an appengine process (AE_LIST_TEST) that weekly generates email. The appengine uses SMTP settings in process sched config file for envprod01.

here is the issue: for SMTP server if we use smtp.xxxx.com the appengine process works fine and the users get the mail in TEST env. However in PROD with same settings the end users do not get the emails. To circumvent the issue we are now using the server names behind the smtp.xxxx.com (servername01-push.com and servername02-push.com)

Both the Test and Prod's code are the same.

any idea what could cause the issue/how to resolve?

thanks!

We are running on HP UX and the email was coded using PeopleCode AE program sendmail.

i'm really not that familiar with smtp. please help.

First, have you checked for error messages? Post any you have found that pertain to this problem. Check for errors in your /var/adm/messages file.

Second, what version of HP-UX?

Third, if this is truely a sendmail program written by a 3rd party vendor, you should really go to them for answers.

Some things you might be able to check:
If sendmail is in /usr/lib (and that's the one you are actually using), you can try the following command which gives information on the set up (normally):
/usr/lib/sendmail -d0.1 -bt < /dev/null

Fix any errors that show up if it runs.