No. On average, a single email experiences 7–10 “hops” (the number of routers through which it is sent) as it travels from sender to recipient. Spamclam becomes the final “hop” in the journey. But even by adding this extra “hop,” you are introducing no additional insecurity to the process of sending or receiving email. In fact, while Spamclam acts like any other router in the transmission process, it actually adds a layer of security to your email by shielding your MX record from the Internet, where it may otherwise be accessible by spammers and hackers.