E-mail problem - can you help?

Miscellaneous Forums/General Discussion/E-mail problem - can you help?

Earlier today I started getting 50+ e-mails every 5 mins into my inbox. Basically they are all failure notices from various Firewalls / maildelivery subsystems. I continually delete them but more come back. Clearly someone or something is using my e-mail to spam other addresses.

Should I contact my ISP or is there something I can do to prevent this or at least find out who/what is using my e-mail?

Any help much appreciated.

Stevie