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Office365 not accessible with UnboundDNS
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Topic: Office365 not accessible with UnboundDNS (Read 849 times)
mekano
Newbie
Posts: 15
Karma: 1
Office365 not accessible with UnboundDNS
«
on:
December 12, 2023, 04:18:56 pm »
i am using Zenarmor , crowdsec and unboundDNS. But suddenly, i can't access office365 web site anymore using unbound with or without blocklist. If i change my dns to, for exemple 8.8.8.8. i've acces to office365 webapp with no problem.
i have try to add a lot of whitelist url in unbound to no success.
Anybody on the same situation ? As far as i can say, everything else is working well with unbound except office365
«
Last Edit: December 12, 2023, 07:01:17 pm by mekano
»
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vpx23
Jr. Member
Posts: 91
Karma: 7
Re: Office365 not accessible with UnboundDNS
«
Reply #1 on:
December 12, 2023, 09:12:39 pm »
The domain office365.com is redirected to
https://www.microsoft.com/en-us/microsoft-365?ms.url=office365com&rtc=1
as they changed Office 365 to Microsoft 365 (Office + Windows).
https://bgp.he.net/dns/office365.com#_website
What does
Code:
[Select]
nslookup office365.com
say?
What happens with
https://status.office365.com
, does it load?
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Crocogator
Newbie
Posts: 12
Karma: 0
Re: Office365 not accessible with UnboundDNS
«
Reply #2 on:
October 24, 2024, 12:22:49 pm »
In my case, checking the Unbound logs really helped pinpoint the issue, so that might be worth a shot for you too. Adding whitelisted URLs should usually work, but I’ve also found that DNSSEC settings can sometimes cause access problems.
If it keeps acting up, you might consider looking into the
microsoft 365 price
for a more stable experience. I found that having direct access without these DNS headaches made a big difference.
«
Last Edit: October 28, 2024, 11:18:11 am by Crocogator
»
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meschmesch
Full Member
Posts: 184
Karma: 5
Re: Office365 not accessible with UnboundDNS
«
Reply #3 on:
October 24, 2024, 12:50:15 pm »
That goes exactly into the direction we were recently discussing on the German board of this forum:
https://forum.opnsense.org/index.php?topic=43283.15
I also had the problem, that some domains were not correctly resolved by unbound. Only after adding an excemption to e.g. office.com with lookup via 8.8.8.8 I was able to correctly access the webpages. User "abulafia" confirmed that he/she also had this issue.
The problem is that the issue only occurs occationally. That makes it difficult to track the problem.
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meschmesch
Full Member
Posts: 184
Karma: 5
Re: Office365 not accessible with UnboundDNS
«
Reply #4 on:
November 21, 2024, 08:42:48 pm »
Today I experienced the same problem again, different domain. After setting 8.8.8.8 as DNS in Adguard, everything worked fine. Unbound didn't throw any errors, so, no Idea how to track the issue.
Any ideas here?
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Office365 not accessible with UnboundDNS