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I have used the following commands

acl Safe_ports port 25 # smtp

acl Safe_ports port 110 # pop3

But when i configured my mail account in my client's machine it doesn't seem to work... Any suggestion....

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up vote 0 down vote accepted

Squid is a HTTP Proxy server. That means, HTTP only. There are some programs like "Proxifier" that intercepts packets from programs in Windows machines and uses the special HTTP CONNECT method to get that working, but it's a hack. Use have to put the ports in SSL_ports, not in Safe_ports to get this working.

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Your mail client doesn't speak HTTP so you can't use an HTTP proxy.

To get "it working" you need to say what are you trying to achieve and why you're trying to use an HTTP proxy. Note that you cannot use Squid as an email proxy server.

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@Havok what can be done to get it working? – Oscar Mar 30 '10 at 4:11
You can with a hack, tunneling connections using the CONNECT method. – diegows May 4 '12 at 20:17

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