Richard B. Pyne: > I am seeing thousands (19000 today) of Illegal address syntax errors in > my logs that I suspect are coming from malware attempting to send spam. > The IP address shown is from our corporate firewall. The mail server is > outside. > > We require logging in to send mail, but I can't figure out how to track > the real sender of the bad email addresses.
You have the SMTP client IP address, which is the most credible information that you have at this point. Test the address with one of the many websites that will do a "dnsbl check" for you. Wietse > Any help on how to rack this down will be greatly appreciated. > > --Richard >