Carrierzone....

[Rick McClure]

Does anyone have a contact to anyone inside carrierzone.com that can help me fix a connectivity issue?  We can receive email from groups that are being hosted on their platform.…all day long…. but we can’t send them anything.  When I try to send email to their abuse address even that bounces back.  In the SMTP send log all I see is it appears that we are somehow sending a parameter (?) I know nothing about.  Here are the log entries for our apparent issue…:

 

2022-08-05T00:18:18.873Z,SBS Internet send connector,08DA71A2E76A6E9B,10,192.168.168.250:27106,66.226.70.73:25,>,STARTTLS,

2022-08-05T00:18:18.921Z,SBS Internet send connector,08DA71A2E76A6E9B,11,192.168.168.250:27106,66.226.70.73:25,<,501 Syntax error (no parameters allowed),

 

I’ve even searched though our firewall logs and don’t see anything that indicates they are being blocked….cuz if that was the case, we wouldn’t connect at all.

 

And BTW…..we have no other known issues sending anyone emails that we know of.

 

TIA,

Rick.

 

 

[Erik Goldoff]

Not familiar with them myself, but have you tried a WHOIS to see if they have a tech contact listed that might be reachable?

Erik

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[Shawn K. Hall]

Carrierzone is the mail provider for most of the small ISPs along the
Sierra Nevada range from LA to Oregon. I have hundreds of clients that
use them and I absolutely abhor their setup. By default, domains are
configured to be accessible only thru the ISPs own domain names, but
their mail domain names don't have TLS/SSL support. If we use secure
ports (465/587/993/995) then the secure connection fails in modern mail
clients because the hostnames don't match, but we can't use the
carrierzone domains (those on the certificate) because then the
mailboxes never resolve. The fix (per carrierzone & the ISPs)? Just
don't use security! It's insane. I have dragged most clients away from
them over this.

All this to say, I would not be surprised if the problem were that your
outbound mail system is configured to switch to TLS/SSL if offered, and
since it is (note STARTTLS), it then fails because the connection can't
be completed securely since the hostname doesn't match.

You can probably add them to a blocklist so that it no longer attempts
to use TLS for connections for messages to their domains.

-S

> -----Original Message-----
> From: ntsys...@googlegroups.com
> [mailto:ntsys...@googlegroups.com] On Behalf Of Rick McClure
> Sent: Sunday, August 7, 2022 10:07
> To: ntsys...@googlegroups.com
> Subject: [ntsysadmin] Carrierzone....
>
> Does anyone have a contact to anyone inside carrierzone.com
> that can help me fix a connectivity issue? We can receive
> email from groups that are being hosted on their

> platform..all day long.. but we can't send them anything.

> When I try to send email to their abuse address even that
> bounces back. In the SMTP send log all I see is it appears
> that we are somehow sending a parameter (?) I know nothing

> about. Here are the log entries for our apparent issue.:

>
>
>
> 2022-08-05T00:18:18.873Z,SBS Internet send
> connector,08DA71A2E76A6E9B,10,192.168.168.250:27106,66.226.70.
> 73:25,>,STARTTLS,
>
> 2022-08-05T00:18:18.921Z,SBS Internet send
> connector,08DA71A2E76A6E9B,11,192.168.168.250:27106,66.226.70.
> 73:25,<,501 Syntax error (no parameters allowed),
>
>
>
> I've even searched though our firewall logs and don't see

> anything that indicates they are being blocked..cuz if that

> was the case, we wouldn't connect at all.
>
>
>

> And BTW...we have no other known issues sending anyone emails

> that we know of.
>
>
>
> TIA,
>
> Rick.
>
>
>
>
>

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> FE098A2F85D11DA93FEEB%40VENUS2A.RMC-CORP.local

> <https://groups.google.com/d/msgid/ntsysadmin/ABCEB02DCBBDBB42
> 9FE098A2F85D11DA93FEEB%40VENUS2A.RMC-CORP.local?utm_medium=ema
> il&utm_source=footer> .
>
>

[Rick McClure]

Now this is some good info. Wondered what was going on. One of their MSPs suggested I turn off security....during our earlier attempt to resolve this. There was a WTF moment!

Is there any way to contact these guys?....Or is this one of those things where it ain't gonna change?

Is there an easy way to turn off TLS in Exchange for just the affected domains?

This has been a thorn in my side for a while now. And of course this kind of info is hard to find. Now that client has a gmail account they exchange emails for my client with because of this.

Rick

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[Jim Kennedy]

Send connector for just the domain involved, then turn of TLS on that connector is the answer, I believe.

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[Erik Goldoff]

" Is there any way to contact these guys?"

didn't like my previous suggestion?  😢

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[Erik Goldoff]

actually, a pretty quick endeavor:

Raw Whois Data

Domain Name: carrierzone.com
Registry Domain ID: 125303284_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.names4ever.com
Registrar URL: http://www.aplus.net
Updated Date: 2022-06-17T19:23:07Z
Creation Date: 2004-07-21T10:54:42Z
Registrar Registration Expiration Date: 2023-07-21T10:54:42Z
Registrar: Deluxe Small Business Sales, Inc. d/b/a Aplus.net
Registrar IANA ID: 52
Registrar Abuse Contact Email: @aplus.net
Registrar Abuse Contact Phone: +1.8557918966
Reseller: Deluxe Small Business Sales, Inc. d/b/a Aplus.net
Domain Status: clientTransferProhibited http://icann.org/epp#clientTransferProhibited
Registry Registrant ID:
Registrant Name: Domain Admin
Registrant Organization: Deluxe Small Business Sales, Inc. Aplus.net
Registrant Street: 801 Marquette Ave S 
Registrant City: Minneapolois
Registrant State/Province: MN
Registrant Postal Code: 55402
Registrant Country: US
Registrant Phone: +1.8557918966
Registrant Phone Ext.:
Registrant Fax: 
Registrant Fax Ext.:
Registrant Email: @aplus.net
Registry Admin ID:
Admin Name: Domain Admin
Admin Organization: Deluxe Enterprise Operations, LLC
Admin Street: 801 Marquette Ave S 
Admin City: Minneapolois
Admin State/Province: MN
Admin Postal Code: 55402
Admin Country: US
Admin Phone: +1.8557918966
Admin Phone Ext.:
Admin Fax: 
Admin Fax Ext.:
Admin Email: @aplus.net
Registry Tech ID:
Tech Name: Domain Admin
Tech Organization: Deluxe Enterprise Operations, LLC
Tech Street: 801 Marquette Ave S 
Tech City: Minneapolois
Tech State/Province: MN
Tech Postal Code: 55402
Tech Country: US
Tech Phone: +1.8557918966
Tech Phone Ext.:
Tech Fax: 
Tech Fax Ext.:
Tech Email: @aplus.net
Name Server: ns3.carrierzone.com
Name Server: ns1.carrierzone.com
Name Server: ns4.carrierzone.com
Name Server: ns2.carrierzone.com
DNSSEC: Unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/ 
>>> Last update of WHOIS database: 2022-07-21T13:24:18Z <<<

On Sun, Aug 7, 2022 at 2:08 PM Rick McClure <rmcc...@rmc-enterprises.com> wrote:

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[Rick McClure]

Thank You, Thank You.  It was on my list for today.

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