Re: xls vs xlsx -- MIDRANGE-L

Subject: Re: xls vs xlsx
From: Rob Berendt <robertowenberendt@xxxxxxxxx>
Date: Wed, 18 Oct 2023 12:45:16 -0400
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The way this has been explained to me is that xls supports certain macros
which are commonly misused. These macros are not available in xlsx.

On Wed, Oct 18, 2023 at 11:07 AM Rob Berendt <robertowenberendt@xxxxxxxxx>
wrote:

Just a heads up.
Some email processes will hold up email with xls attachments for 10
minutes before sending them on while those with xlsx attachments do not
have this issue.
I recommend you migrate your processes to the newer format.
We are seeing this on Cisco's product we have fronting our O365
environment.

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