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February 12, 2007
Spiced Ham and Counter Measures
Funny how, when things happen, they cascade through the Internet.
Over the December-Jan hols (remember those?), I was giving remote support to a friend overseas in Malaysia on his email problems. And I was just saying that "it doesn't happen to me". Well it did just happen, so take a pew.
This friend of mine was working from home in Malaysia, connecting to SMTP server(s) in his employer's premises in Singapore. Frequently, the SMTP server would tell him off. After some troubleshooting, we found out that various IP addresses on the Malaysian Government owned ISP, Streamyx were on some blacklist. The techo in Singapore had a simple solution. Since my friend's home modem+router was set to WAN DHCP, simply cycle the power switch and maybe, just maybe, the DHCP would grab an un-blacklisted IP address. I thought this a very unprofessional approach - it's certainly disruptive to any LAN activities to reset the modem every so often and one still might not grab a clean IP.
Then, this week, one of my own correspondents was sending me email and it wasn't reaching me. You guessed it, my incoming Optus email server was rejecting his SMTP server (I think MS Exchange) based on his WAN IP address. And he wasn't going to cycle his modem/router to hopefully grab an un-blacklisted IP address.
So he's sending email to my non ISP account in the future - I've got several of those handy. Again, not a preferred resolution. But what's a person to do?
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Posted by Anandasim at February 12, 2007 03:58 PM
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