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No one realistically has a choice about dealing with either for email.
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<div class="">In any case, we found a vastly simpler way of doing this; our cloud email security/anti-spam provider (Barracuda) can spool mail for delivery if our systems go offline for up to 96 hours, so we’re setting them to not deliver tonight, doing the
migration, changing our MX Records after to let the outside know where its supposed to send us email and then changing the delivery address we have on Barracuda to the new one, and the mail should flow in.
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<div class="">In theory! :-)</div>
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<div>Thanks for all the suggestions, everyone.</div>
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<div class="">On Jan 6, 2023, at 12:52 PM, Mark Andrews <<a href="mailto:marka@isc.org" class="">marka@isc.org</a>> wrote:</div>
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<div class="">Just a reason to not use them for your email. Not everybody is in a position to repair stuff on a 7/24/365 basis. Notify that the mail is delayed by don’t bounce.<br class="">
-- <br class="">
Mark Andrews<br class="">
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<blockquote type="cite" class="">On 7 Jan 2023, at 06:11, Brown, William <<a href="mailto:wbrown@e1b.org" class="">wbrown@e1b.org</a>> wrote:<br class="">
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Last I saw, both M365 and Google only retry for 24 hours before returning as undeliverable.<br class="">
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--<br class="">
William Brown<br class="">
WNYRIC/Erie 1 BOCES<br class="">
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-----Original Message-----<br class="">
From: bind-users <<a href="mailto:bind-users-bounces@lists.isc.org" class="">bind-users-bounces@lists.isc.org</a>> On Behalf Of Marcus Kool<br class="">
Sent: Wednesday, January 4, 2023 7:17 AM<br class="">
To: <a href="mailto:bind-users@lists.isc.org" class="">bind-users@lists.isc.org</a><br class="">
Subject: Re: Email migration and MX records<br class="">
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SMTP is a wonderful protocol that queues messages and retries delivery for 5 days so a non-responsive email server is no issue.<br class="">
Just do not have a temporary solution that bounces emails since those will never arrive (the sender is notified about the bounce).<br class="">
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<div class="">-- <br class="">
Bruce Johnson<br class="">
University of Arizona<br class="">
College of Pharmacy<br class="">
Information Technology Group<br class="">
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