On Wed, Feb 10, 2016 at 8:17 AM, Poulter, Dale
<dale.poul...@vanderbilt.edu> wrote:
> All,
>
>
>
> It appears that the problem is even more widespread.  The system will not
> accept any email.  The errors appear to point to missing subjects and from
> addresses but the process worked before the upgrade.  ANY help will be
> appreciated.  I am out of ideas.

Is sendmail/postfix/exim/etc. listening?

Can you send email to the system locally?

date | mail -s 'a test email that shows the date' someb...@vanderbuilt.edu

Have you checked the firewall?

Start with the basics and work your way up the stack.

-m

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