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Slow Webmail Connected over mobile Hotspot
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Server Version: 25.0.2
We have a very unusual case. Let's see if anyone can shed some light on it...
When users connect to webmail from outside using a laptop connected to a mobile hotspot, the webmail opens fine but gradually starts to run very slowly, to the point where it won't load at all.
However, when connected directly to Wi-Fi, it works correctly.We have other services published, including VPN, all managed by our firewall. We are only having problems with mdaemon webmail; connected to hotpot general web browsing works fine, so its not slow hotspot problem. Furthermore, if it were a problem with our network or firewall, users would see their VPN connection affected as they would be constantly disconnected. Once connected over VPN, webmail works fine.
I have been searching the internet and it seems that ISPs limit the bandwidth to devices connected to the hotspot or MTU is lower. I don't know to what extent this is affecting us.
This has been happening for a few months now. We have been using mdameon for many years and no one has reported this to us until now.
Is this happening to anyone else? What can we check? Are we missing something? It's a real headache not being able to work with a mobile hotspot when someone is traveling...
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When users connect to webmail from outside using a laptop connected to a mobile hotspot, the webmail opens fine but gradually starts to run very slowly, to the point where it won't load at all.
However, when connected directly to Wi-Fi, it works correctly.So if the very same laptop uses a wifi connection instead of the hotspot and logs into the very same webmail account, the problem doesn't occur?
Are they using HTTP or HTTPS to access webmail? Hopefully they are already using HTTPS, but if they are not, try changing to HTTPS.
There is nothing that I can think of in webmail that would intentionally slow the connection down over time.
