10000 emails in postfix queue in 1h?

[goggster]

Hi all!
I use ISP2 for about 1 year, never had any problem.
It seems that now i have one... While trying to send an email, i discovered that the recipient hadn't received.
In the console, i discovered that there were about 8000 emails in queue
When running mailq, showed me this, executed postsuper -d ALL, cleared all, and sending/receiving back again. But,in about 1/2 hour, the queue is increasing again...
sender/recepient of this is gpadmore10013@live.com.
What is wrong?

[edge]

Looks like some spammer is using your mailserver to send his spam.

- Is the server up to date?
- Are you running any websites that have somekind of mail option and are they all up to date?
- Are your users email passwords strong enough?
- Did you scan your system for any rootkits, trojans, backdoors and local exploits?

Best thing todo now is to take the server offline and see how the spammer managed to abuse your system.

Good luck and have fun.