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New Member
Posts: 6
Registered: ‎06-15-2017
Kudos: 1

I cannot received my email anymore

 

Hi, 

 

I recently updated my Unifi Cloud Key as well as the Unifi to the latest version. And since, I cannot received any email from my own server (cpres3.idig.net port 993 with ssl). At first I thought my server had an outage, and tested it with my phone. If I'm connected to the wifi, the connection is impossible. So I tried to be on LTE, and my emails pops in my inbox. I activate the wifi, then retry, still got the error. I tested with some PC/Mac, phone/tablet and when I'm on my wifi, I can't get my emails from my server. I also have a yahoo email and I can receive the emails...

 

I tried to figured what's happend and the only thing that have changed is the firmware version and the unifi version. 

I don't remember creating rules or anything else in that way to block me from having my emails...

I changed the DNS in the CK just in case, still got the issue.

Search for days an answer online and I haven't found anything useful. 

 

The only thing remaining is to wipe everything and start from scratch, but I don't want to reconfigure all my networks. I have a UniFi Security Gateway 3P (ver. 4.4.29.5124210), 2 UniFi Switch 8 POE-60W (ver. 3.9.54.9373), 2 UniFi AP-AC-Pro (ver. 4.4.29.5124210) and the UniFi Cloud Key (firmware ver. 0.12.0). Everything run smoothly excepts my emails issue

 

So I'm here to ask for help because I'm clueless. Hope someone will be able to help me

Thanks!

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Senior Member
Posts: 5,456
Registered: ‎01-04-2017
Kudos: 760
Solutions: 270

Re: I cannot received my email anymore

Did you try a simple reboot of devices? Post config
New Member
Posts: 14
Registered: ‎02-22-2018
Kudos: 1

Re: I cannot received my email anymore

[ Edited ]

This sounds like a firewall problem. Check your firewall entries and maybe IPS block list.

 

And check firewall on your server. It could be that server is blocking your home IP. Try to do anything else on the server, like open website (if you host it) or SSH connection or something.

One small step for LAN, a giant leap of WLAN.
New Member
Posts: 6
Registered: ‎06-15-2017
Kudos: 1

Re: I cannot received my email anymore

Yep, I tried to reboot it many times. Also, I have some trouble with my CloudKey, but that's another subject. 

New Member
Posts: 6
Registered: ‎06-15-2017
Kudos: 1

Re: I cannot received my email anymore

Hi sce-ds2 and thanks for your kind reply.

 

The email server is located in another city and I haven't any issue before the update (or it's just a coincidence). Maybe something lies in the configuration of the network... but I don't know where to search. I'm able to ssh my devices in case I'll have to do some stuff there...

 

For the firewall configuration, here what I have:

PS. Sorry for the bulk information.

 

RULES IPv4

 

WAN IN

RULE INDEX ENABLED NAME ACTION PROTOCOL SOURCE DESTINATION ACTIONS
3001 allow established/related sessions Accept All
3002 drop invalid state Drop All
3003 PortForward [Plex] Accept TCP and UDP
3004 PortForward [Torrent] Accept TCP and UDP

 

WAN LOCAL

RULE INDEX ENABLED NAME ACTION PROTOCOL SOURCE DESTINATION ACTIONS
3001 allow established/related sessions Accept All 
3002 drop invalid state Drop All 

 

LAN IN & LAN OUT

RULE INDEX ENABLED NAME ACTION PROTOCOL SOURCE DESTINATION ACTIONS
6001 accounting defined network 192.168.1.0/24 Accept All
6002 accounting defined network 192.168.2.0/24 Accept All

 

GUEST IN

RULE INDEX ENABLED NAME ACTION PROTOCOL SOURCE DESTINATION ACTIONS
3001 allow DNS packets to external name servers Accept TCP and UDP
3002 allow packets to captive portal Accept TCP
3003 allow packets to allow subnets Accept All
3004 drop packets to restricted subnets Drop All
3005 drop packets to intranet Drop All
3006 drop packets to remote user Drop All
3007 authorized guests white list Drop All

 

GUEST LOCAL

RULE INDEX ENABLED NAME ACTION PROTOCOL SOURCE DESTINATION ACTIONS
3001 allow DNS Accept TCP and UDP
3002 allow ICMP Accept ICMP
3003 allow to DHCP server Accept UDP

 

No group is defined

 

And the remaining settings

CONNTRACK MODULES
FTP = ON
GRE = ON
H.323 = ON
PPTP = ON
SIP = ON
TFTP = ON


STATE TIMEOUTS
ICMP = 30 seconds
Other = 600 seconds
TCP Close = 10 seconds
TCP Close Wait = 60 seconds
TCP Established = 7440 seconds
TCP FIN Wait = 120 seconds
TCP Last ACK = 30 seconds
TCP SYN Recv = 60 seconds
TCP SYN Sent = 120 seconds
TCP Time Wait = 120 seconds
UDP Other = 30 seconds
UDP Stream = 180 seconds


FIREWALL OPTIONS
Broadcast Ping = OFF
Receive Redirects = OFF
Send Redirects = ON
SYN Cookies = ON


DEFAULT ACTION LOGGING
WAN Rules = OFF
LAN Rules = OFF
Guest Rules = OFF

 

The port forwarding configuration:

NAME DEST IP/PORT ACTIONS
Plex * 32400 192.168.1.110:32400
Torrent * 45682 192.168.1.111:45682

 

This configuration was there before my email refused to work at home. 

I don't see anything wrong with this configuration, but if you see something, tell me. 

 

I'll think I'll contact my ISP to check if the port 993 is blocked. In the meantime, I'll continue to search for a fix...

 

Thanks for your help!

New Member
Posts: 14
Registered: ‎02-22-2018
Kudos: 1

Re: I cannot received my email anymore

Well I still think there is a firewall problem on your server. Server where you host your email. It could be that it blocked your home ip. Can you check that as well?

One small step for LAN, a giant leap of WLAN.
New Member
Posts: 6
Registered: ‎06-15-2017
Kudos: 1

Re: I cannot received my email anymore

I'll check that too!
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