Zdravim, v poslednej dobe zacali odosielatelia dostavat tento email:
This is the mail system at host mx-sk-0.novalocal.

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

<admin@.......edu.sk>: host 192.168.1.23[192.168.1.23] said: 552 5.2.2
<admin@.........edu.sk> Quota for this mail account has been exceeded,
please try again later. (in reply to end of DATA command)
Takto si odosielatelia myslia, ze email sme neprijali, ale napriek tejto sprave email prejde a máme ho. Kde moze byt problem, skusili sme vymazat staru postu, ale nepomohlo. Dakujem