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New Member
Posts: 7
Registered: ‎05-12-2018

UAP Pro / USG blocks email communication

Hi folks, 

Iam using 2 UAP Pro and a USG in my private network at home. i am struggling with communication of mail.app on my mac with my private mail addresses. If I switch to another network (neighbor network with non Ubiquity network hardware) everything works well a mail.app is able to communicate with my IMAP server. So I think the problem is the USG or the access points.

 

Tried the search function before but I did not find a related/helpful answer. 

 

my Hardware:

2x UniFi AP-AC-Pro  - software version 4.0.21.9965

1x UniFi Security Gateway 3P - software version 4.4.36.5146617

 

Any ideas?

 

Thanks for help!

 

Rgds,

Thomas

Senior Member
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Re: UAP Pro / USG blocks email communication

Hello @tomben,

 

Do you have anything infron of the USG that could block it?

 

 

Regards,

Glenn R.

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New Member
Posts: 7
Registered: ‎05-12-2018

Re: UAP Pro / USG blocks email communication

Hi Glenn,

in front of the USG is only the fiber modem provided by my ISP. The USG established the connection to the internet through the fiber modem. The modem is without any configuration settings.
Rgds,
Thomas
Senior Member
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Registered: ‎08-04-2017
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Re: UAP Pro / USG blocks email communication

Hello @tomben,

 

Does it work when directly connected to the ISP modem?

 

 

Regards,

Glenn R.

Cloud Hosted Controllers | Glenn R. | UniFi Installation/Easy Update Scripts | UniFi-VoIP Installation Scripts
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New Member
Posts: 7
Registered: ‎05-12-2018

Re: UAP Pro / USG blocks email communication

Hi Glenn, tried it but my mac was not able to connect via PPPoE.
What I also tried is to use the WiFi from my neighbor and it works in his network. He has a router provided by his ISP.
And if I remember the time before using USG I never had problems with IMAP connectivity.
Senior Member
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Re: UAP Pro / USG blocks email communication

Hello @tomben,

 

I personally don't have any IMAP issues in my network, did you modify any firewall rules?

 

 

regards,

Glenn R.

Cloud Hosted Controllers | Glenn R. | UniFi Installation/Easy Update Scripts | UniFi-VoIP Installation Scripts
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New Member
Posts: 7
Registered: ‎05-12-2018

Re: UAP Pro / USG blocks email communication

The only thing I changed is the VPN configuration. Added DynDNS and some VPN profiles. Works well so far.
But I had the IMAP errors before as well...

Senior Member
Posts: 16,322
Registered: ‎08-04-2017
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Re: UAP Pro / USG blocks email communication

Hello @tomben,

 

Make sure you're not blocking the following ports:

  • Port 143
  • Port 993

 

 

Regards,

Glenn R.

Cloud Hosted Controllers | Glenn R. | UniFi Installation/Easy Update Scripts | UniFi-VoIP Installation Scripts
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Re: UAP Pro / USG blocks email communication

@tomben  do you have any geo-ip filtering?

Do you have any IPS alerts?

Any DPI restrictions?

New Member
Posts: 7
Registered: ‎05-12-2018

Re: UAP Pro / USG blocks email communication

the only traffic that is blocked is P2P traffic on guest wifi. No other restrictions. No GeoIP filtering.....
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