Could not send email to office 365

• Subject: Could not send email to office 365
• From: jabley at hopcount.ca (Joe Abley)
• Date: Thu, 2 May 2013 07:53:15 -0400
• In-reply-to: <[email protected]>
• References: <[email protected]> <[email protected]>

On 2013-05-02, at 02:42, Cathy Almond <cathya at isc.org> wrote:

> This may be a red herring, but I've heard of some dropping of DNS
> queries for the names within outlook.com domains where the queries are
> all coming from source port 53 (i.e. your recursive server doesn't use
> query source port randomization

... or there's a NAT or some other box in front of the recursive server which re-writes the source port...

> ).  Might be worth checking what the
> recursive server you're using is doing?
> 
> See https://www.dns-oarc.net/oarc/services/porttest


Joe

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    • From: you at ugec.net (ISHII, Yuji)
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    • From: cathya at isc.org (Cathy Almond)

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