Can't Receive Mails

I have… Debian 10, virtualmin 6.1.5…

I don’t know exactly from where to start… all worked ok - before being “target” of spam - finally found the account exposed and used for sending emails to others… and of course deleted because was using a very simple pass…

So then I’ve decided to make more speed my server and check that logs coming up to 4GB+ +so change the log rotation…

Reboot my vps… and then after all i can’t receive mails… i can send to some external domains but not to mine… (#$#@$##)

I get from mail client when i sent from other domain this:

This is the mail system at host ooo******.xx.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<m*******@oooo.xx> (expanded from <m*****@ooo******.xx>): Host or domain name not found.
    Name service error for name=m******* type=AAAA: Host not found

and for when sending to my domains… nothing at alll… What happened ? Can someone help me plz ?

@magma well first of all would be good if you would tell us what os and version of os you running virtualmin on… without that, keep searching.

Sorry… Debian 10 + virtualmin 6.1.5

+extra info…
user can get into/fetch mails → but there is no into any new mail

…somethings change at postfix… may be my mistake… but… now working… Thanks :slight_smile:

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