North American Network Operators Group|
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Re: Time to check the rate limits on your mail servers
On Thu, 03 Feb 2005 12:16:41 EST, Jason Frisvold said: > Agreed. And depending on your service, there are different ports > worth blocking. For residential users, I can't see a reason to not > block something like Netbios. And blocking port 25 effectively > prevents zombies from spamming. Unfortunately, it also blocks > legitimate users from being able to use SMTP AUTH on a remote server.. There's a *reason* why RFC2476 specifies port 587....