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by CloudNetworking
2559 days ago
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I'm guessing an MX sees mostly server to server traffic, so I kind of expect that; however for services used by consumers around the world it might be a very bad idea to disable SACK. The bigger impact will be for users far away, with increased risk of packet loss and higher latency. It's too easy to drop packets with very low MSS and, unless you've got specific needs (someone mentioned IOT), there's no reason to not drop packets with MSS < 536 or so. I believe Window's smallest MTU (MSS + IP and TCP headers) size is 576 bytes for example. |
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