[RKDinOKC]

Okay I got a question...

We have our email in Exchange Online, part of Office 365.
There is a program that lets you automatically put signatures on people's emails.
It gets data from Active Directory (Office365) like their name and phone etc.
It seems really nice for standardizing signatures for our 700+ users.
The way it works is and email come is to exchange online submission queue it is forwarded to this app, the app adds the signature then sends it back to the exchange online transport queue to be delivered.

The network admin and new server guy that was an onsite exchange admin don't want us to go the feature becasse "It is adding a step that will break and keep email from being delivered."

First, the program runs in Microsoft Azure Online and has the reliability of Exchange Online itself.
Second, the company says works as part of email submission to exchange BEFORE any delivery actions are attempted so does not effect delivery.
Third, I can find nothing where anyone has had problems with it's uptime.
Four, if there is a mail delivery problem I am the one that troubleshoots and fixes it not them they are not the email administrator.

What do you think, is their concern really valid even though I can find nothing to support it?