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for about a week yahoo and Hotmail are not allowing mail that is coming from my pbx (Gmail is working fine)


polycom2080
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for about a week yahoo and Hotmail are not allowing mail that is coming from my pbx (Gmail is working fine)

 

are there any new security from yahoo and Hotmail that blocks the traffic if yes is their any way to meet the security

 

Yea this is a kin of moving target. The first problem is that they sometime just blacklist IP addresses (probably similar to the automatic blacklisting of the PBX).

 

The second problem is the TLS features that they expect. There are different ways to encrypt TLS messages, and I have the feeling sometimes they enable and disable certain mechanisms that the PBX is using.

 

If you run your own email server you have full control over it; if you are using gmail it is a little bit question of luck. SO if you can, use your own email server...

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