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by tacon 1382 days ago
Essentially all residential IPs are blacklisted for email servers, at least on port 25. Many ISPs blackhole any traffic on port 25 to residential IPs. Do you have port 25 working on your residential connection?
2 comments
NavinF 1382 days ago
Isn’t port 25 used for unencrypted traffic as opposed to port 465? I’m pretty sure I had a working mail server back in 2012 behind an ISP that blocked port 25.
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toun 1381 days ago
It's blocked by default but my ISP lets me open it. But as noted by NavinF I'm not using it anyway.
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