Email partially received

Help with Unusual Circumstances
1

Hello,

I am having issue with one of the mail box, a strange issue.

That particular mail box doesn’t receive all the email. some of them, but not all.
Let s call the problematic email A
If I send an email from test1@domain to A@domain, it works perfectly
If I send an email from test2@gmail.com to A@domain, it works
If I send email from test3@hotmail.com to A @domain, email not receipt, and 18hr later, I get a message on hotmail saying the message could not be sent
If steam send email for steam guard at A@domain : no email received

why would the mail box receive certain email and not others ?
I don’t see anything in /var/log/mail.log…

any idea where to look ??

Thank you
feydreva

2

Could you post the domain name?

3

Could you share this message perhaps? Without specific information, nobody will be able to assist. Feel free to PM me if so desired.

4

Hello,

Sorry about my slow responses time.
Before I stopped receiving certain email, I tried to do the upgrade of mail in a box on my original install with ubuntu 18. wich work, but it was still in version 57 after upgrade

Thinking it was linked to the upgrade, I decided to upgrade to ubuntu 22 and mailiabox 60.1.
Trying to connect to OVH, but not receiving the 2FA, because of this issue, I decided to create a new box at Hetzner (where I moved all my other VPS)

Everything is done : miab 60.1 and ubuntu 22. But I am now waiting for the glue record IP to be updated …
it s been 5 days and it is still not accessible.
I did not anticipate having no email for that long !!! maybe we should write it that it takes a long time for glue record change and dns propagation to happen… I was more expecting 24-72hrs…

Domain is randome.camp. If i check dns propagation for NS randome.camp, I see it s not yet updated everywhere…

5

OK… So now my MailInaBox is running on Ubuntu 22 with MIaB 60.1

I have the main domain, randome.camp that is managed by miab.
my miab is also serving mail for a 2nd domain : paradize.io (which i use the most)

Now that my glue record is updated,and dns working properly (after I entered the command sudo service nsd restart, it went way faster)

for information
_ DNS for randome.camp is done by the box
_ DNS for paradize.io is done by cloudflare.

So i receive most of the email…
after my box went online, I received 20 email from different services I use.
If I send myself an email from a google account, I also receive it
loggin 2fa from binance works

but email I don’t receive are email from an account on hotmail.com and from steam2fa, or from OVH 2FA.

any idea ? could you help see what s going on ?

6

Doing more testing.
it seems I receive all email coming for de 1st domain : randome.camp
but in the 2nd domain, administered by cloudfare, I have partial reception.

Any idea on what to do ?

7

OK I left cloudflare and let MIaB handle all DNS.
All mail came back !
wonder why having cloudflare DNS would block some mail but not others …