Orbi Blocking my IMAP server

Question

I cannot connect to my email provider imap.onebox.com on any device on the wifi or LAN. I can ping it no problem. If i connect directly to cable modem i can retrieve emails on laptop. Same with phone if I turn off wifi and go cellular.

I have defaulted Orbi and power cycled cable modem to no avail.

I have also tried to add a service via security>block services>allow>and added imap port 143.

also added https 443.

Firmware is current V2.3.5.26

any ideas????

CrimpOn · Answer

RBR20_user&nbsp;wrote:I cannot connect to my email provider imap.onebox.com on any device on the wifi or LAN. I can ping it no problem. If i connect directly to cable modem i can retrieve emails on laptop. Same with phone if I turn off wifi and go cellular.I have defaulted Orbi and power cycled cable modem to no avail.I have also tried to add a service&nbsp; via security&gt;block services&gt;allow&gt;and added imap port 143.also added https 443.Opening a port is for when there is a host connected to the Orbi that should be available to access from the internet.&nbsp; Orbi does not restrict connections to the internet.&nbsp; I just checked my Orbi.&nbsp; Not only can I "ping", but I can also connect to the IMAP server, which says that it is:C:\Users\xxx ping imap.onebox.comPinging smtp.onebox.com [204.11.168.233] with 32 bytes of data Reply from 204.11.168.233: bytes=32 time=13ms TTL=243Reply from 204.11.168.233: bytes=32 time=12ms TTL=243Reply from 204.11.168.233: bytes=32 time=12ms TTL=243Reply from 204.11.168.233: bytes=32 time=12ms TTL=243Ping statistics for 204.11.168.233:Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds:Minimum = 12ms, Maximum = 13ms, Average = 12msC:\Users\**bleep**&gt;nslookup imap.onebox.comServer: UnKnownAddress: fe80::a204:60ff:fe1c:239Non-authoritative answer:Name: smtp.onebox.comAddress: 204.11.168.233Aliases: imap.onebox.comC:\Users\xxx telnet imap.onebox.com 143* OK securemail.onebox.com MailSite IMAP4 Server 10.3.0.2 ready&nbsp;What email application is being used, on what platform (Windows, Mac, Android?)Does this Orbi have Disney Circle or Bitdefender Armor activated?

RBR20_user · Answer

hmmmWell i cannot telnet to imap.onebox.com behind the Orbi, just times out, but I am able to directly to cable modemThe email clients are Outlood 2010 and Apple Mail Windows 10/7 and Apple OS 13.3.1The logs from&nbsp;&nbsp;&nbsp;C:\Users\xxxx&gt;nslookup imap.onebox.comServer: dns.googleAddress: 8.8.8.8Non-authoritative answer:Name: smtp.onebox.comAddress: 204.11.168.233Aliases: imap.onebox.comC:\Users\xxxx&gt;nslookup imap.onebox.comServer: cdns01.comcast.netAddress: 75.75.75.75Non-authoritative answer:Name: smtp.onebox.comAddress: 204.11.168.233Aliases: imap.onebox.com&nbsp;FROM BEHIND CABLE MODEM&nbsp;C:\Users\xxxx&gt;telnet imap.onebox.com 143* OK securemail.onebox.com MailSite IMAP4 Server 10.3.0.2 readyC:\Users\xxxx&gt;ping imap.onebox.comPinging smtp.onebox.com [204.11.168.233] with 32 bytes of dataReply from 204.11.168.233: bytes=32 time=36ms TTL=243Reply from 204.11.168.233: bytes=32 time=38ms TTL=243Reply from 204.11.168.233: bytes=32 time=38ms TTL=243Reply from 204.11.168.233: bytes=32 time=38ms TTL=243Ping statistics for 204.11.168.233:Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds:Minimum = 36ms, Maximum = 38ms, Average = 37ms&nbsp;C:\Users\xxxx&gt;nslookup imap.onebox.comServer: cdns01.comcast.netAddress: 75.75.75.75Non-authoritative answer:Name: smtp.onebox.comAddress: 204.11.168.233Aliases: imap.onebox.com&nbsp;&nbsp;&nbsp;

RBR20_user · Answer

The logs dont report any blocking, is that expected?&nbsp;

CrimpOn · Answer

RBR20_user&nbsp;wrote:Well i cannot telnet to imap.onebox.com behind the Orbi, just times out, but I am able to directly to cable modemThe email clients are Outlood 2010 and Apple Mail Windows 10/7 and Apple OS 13.3.1I probably did not make clear that using telnet is an "Old Guy Trick" because telnet allows specifying the "port".&nbsp;By default, telnet listens on port 23, but since the user can set software up any way they please, the telnet client will attempt to connect to whatever port the user enters.&nbsp; Is there an smtp server?&nbsp; telnet to port 25, and if it answers then yes.&nbsp; An ftp server?&nbsp; telnet to port 21.&nbsp;In this case, for an imap server, telnet to port 143 by adding 143 to the end of the command.&nbsp;I no longer have Outlook 2010 (I had it before upgrading), and my Roadrunner email account used IMAP successfully on every Outlook since the early 2000's.&nbsp;If you already tried to telnet to port 143 and it failed, then this is very strange.&nbsp;I did not see whether Disney Circle or Bitdefender Armor are activated?

RBR20_user · Answer

Definitely&nbsp;fails on port 143,with Orbi conectted however its also fails on port 25 using smtp.onebox.com.&nbsp; (Comcast blocking????)But, if i bypass (direct to cable modem) the Orbi, i can&nbsp;retrieve email and send emails. But im using port 465 for SMTP which just gives a blank screeen when telneting.&nbsp;C:\Users\XXXX&gt;telnet smtp.onebox.com 25Connecting To smtp.onebox.com...Could not open connection to the host, on port 25: Connect failed&nbsp;&nbsp;C:\Users\XXXX&gt;telnet smtp.onebox.com 25Connecting To smtp.onebox.com...Could not open connection to the host, on port 25: Connect failedC:\Users\XXXX&gt;telnet smtp.onebox.com 465&nbsp;I do not use the either Disney Circle or Bitdefender Armor, did the trial of&nbsp; Armor wheni first got router, but did not sign up.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

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Orbi Blocking my IMAP server

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