sendmail anyone?

[Michael Schultheiss]

I'm not familiar with sendmail (I prefer Postfix) but it sounds like its
timing out on reverse DNS lookup.
On Apr 18, 2016 11:01 AM, "Brown, David (Test Dept)" <
doc.brown at rolls-royce.com> wrote:

> Calling all CINLUG gurus!
>
>
>
> Background:
>
> I have a server that I simply edited the DS (Smart Relay) to point to a
> load balancer in front of a bunch of corporate Exchange servers. I have my
> web service setup to send mail messages to the local sendmail daemon and
> then they get relayed to the corporate server. This has worked for years.
> Recently there was some sort of issue with either the network name server,
> firewall(s), load balancer, or exchange server itself which caused all mail
> to get “connection refused” messages. Unfortunately when this happened it
> caused sendmail to delay for a very loooooong time before giving up and
> queueing the mail. Even when executing a simple text mail from the command
> line with the command “echo hello | mail -s hello
> doc.brown at rolls-royce.com” it hangs for about a minute or more before
> returning you to the prompt. Needless to say, when this happens it also
> breaks a bunch of web-based scripts that similarly hang when they send mail
> to the local sendmail.
>
> Question:
>
> Is there a way to configure sendmail to not delay or wait for a response
> for so long?
>
>
>
> Thanks for your time,
>
>
>
> *David (Doc) Brown*
>
> *Rolls-Royce Electronics Engineer*
>
> *P.O. Box 420 / Mail Stop S15*
>
> *Indianapolis, IN 46206-0420*
>
> +1 317 230 3623 / Tel
>
> +1 317 230 6152 / Fax
>
> +1 317 753 9752 / Mobile
>
> doc.brown at rolls-royce.com / Email
>
>
> This e-mail (including attachments) contains contents owned by Rolls-Royce
> plc and its subsidiaries, affiliated companies or customers and covered by
> the laws of England and Wales, Brazil, US, or Canada (federal, state or
> provincial). The information contained in this email is intended to be
> confidential, may be legally privileged and subject to export controls
> which may restrict the access to and transfer of the information. If you
> are not the intended recipient, you are hereby notified that any retention,
> dissemination, distribution, interception or copying of this communication
> is strictly prohibited and may subject you to further legal action. Reply
> to the sender if you received this email by accident, and then delete the
> email and any attachments.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.cinlug.org/pipermail/cinlug/attachments/20160418/0f684a8a/attachment.html>