RBL servers Adrian
RBL servers Synametrics Support
RBL servers Adrian
| From: | Adrian |
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| Date: | 4/17/25 8:01 AM |
| Topic: | RBL servers |
| Type: | General Discussions |
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hello, I get thousands of failed login attempts from nefarious IPs all over the world -invariably they appear on blacklists, such as spamcop. I have the server setup to block for 999 minutes, but there are so many fresh each time it doesn't do much (about 8 per minute). My question is, could we attach logins to RBLs so they are denied in the first instance? I know this wouldn't stop spoofing necessarily, but surely would stop the low hanging fruit? thanks, adrian |
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| From: | Synametrics Support |
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| Date: | 4/24/25 8:05 AM |
| Topic: | RBL servers |
| Type: | General Discussions |
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Adrian, I will submit a request to perform an RBL check. However, since many dynamic IP addresses appear in RBL servers, I think that will end up blocking many legitimate addresses. A better approach is to disable SMTP Authentication on port 25 and only allow your in-house users on port 587. Block port 587 from the Internet if possible, provided your in-house users are inside your LAN. Please refer to https://www.xeams.com/best-practices-prevent-password-hacks.htm for tips.
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| From: | Adrian |
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| Date: | 4/24/25 10:24 AM |
| Topic: | RBL servers |
| Type: | General Discussions |
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but as this is a login to Xeams, surely that's ok? The most recent ones I have are all listed on spamcop -presumably it's hackers trying to gain access to mail servers and then sending spam when they do |
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