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Turns out we had already had the recipient filtering on - I think we were under a DHA. But the steps helped clean our the mail queues
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Turns out we had already had the recipient filtering on - I think we were under a DHA. But the steps helped clean our the mail queues

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I help run a network (100-200 clients) Our mail server - through microsoft exchange 2003 - is the target of a reverse NDR attack. Using wireshark I've seen the tell tale pattern. As an administrator what steps should i take to stop this NDR attack? Thanks
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I help run a network (100-200 clients) Our mail server - through microsoft exchange 2003 - is the target of a reverse NDR attack. Using wireshark I've seen the tell tale pattern. As an administrator what steps should i take to stop this NDR attack? Thanks

NDR attack

Anti-virus software was originally developed to detect and remove computer viruses. However, with the proliferation of other kinds of malware, antivirus software started to provide protection from other computer threats. In particular, modern antivirus software can protect from malicious browser helper objects (BHOs), browser hijackers, ransomware, keyloggers, backdoors, rootkits, trojan horses, worms, malicious layered service providers (LSPs), dialers, fraud tools, adware and spyware. Some products also include protection from other computer threats, such as infected and malicious URLs, spam, scam and phishing attacks, online identity theft (privacy), online banking attacks, social engineering techniques, Advanced Persistent Threat (APT), botnets and DDoS attacks.

Anti-Virus Apps

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

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