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Odd email server network issue


G+_Eddie Foy
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Odd email server / network issue.

Running a email server here at home.

Apple mail can not connect if I use the internal IP, but OK if I use the external IP. (for server addresses)

 

Now I had issues with the Cisco router (not Linksys) blocking/filtering that loop-back of sorts to the external IP. (makes sense since its  pointless, its like going out your front door every time before going to a new room)

 

I'm running ProXPN VPN, which fixes that Cisco item.

I'm just perplexed why it can't connect via internal IP.

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