Zoho Emails Blocked - Outlook Works Fine...

The problem:

Eversince I started emailing through Zoho, all my emails to staff at Buddle Findlay (a Law Firm) have been blocked by their Lawtech mail marshall. I have had numerous conversations with the Lawtech guy whose name is Christophe Cottereau. He has whitelisted us but that does not solve the problem. He is able to manually release my emails, but I have to call and ask him to do this every time - a pain in the ----

Last year, on advice of my website guy Tony Stewart, I did an experiment and emailed Buddle Findlay using Outlook. It worked. So here's what Tony says:

Hi Robyn,

I doubt this is anything to do with Telecom (our email server) as our test last year showed that messages sent from Core Consulting via Outlook (not Zoho) were getting through.
There is a MailMarshal rule or blacklist that doesn't like Zoho. You could try sending this info to Zoho support and let them investigate. They may need to sort this with the MailMarshal administrator directly.

Below you will see information forwarded from Christophe at Lawtech services that might help Zoho to solve the problem.

And while they are at it, I would like to know why some of my emails show to the recipient as coming from coreconsulting1@zoho.com wheras they should show as coming from robyn@coreconsulting.co.nz which is the only email address I use!

Information From Lawtech...

FYI, if you take this to your host. Cheers

09:56:22.020 TX: <220 WNDNS.lawtech.co.nz ESMTP Ready>

09:56:22.286 RX: <EHLO sender1.zohomail.com>

09:56:22.911 TX: <250-WNDNS.lawtech.co.nz Hello sender1.zohomail.com (72.5.230.95)

250-STARTTLS

250 SIZE>

09:56:23.051 RX: <MAIL FROM:<coreconsulting1@zoho.com>>

09:56:23.051 TX: <250 sender ok <coreconsulting1@zoho.com>>

09:56:23.176 RX: <RCPT TO:<Joanna.Goldfinch@buddlefindlay.com>>

09:56:23.176 Checking user criteria for Rule Incoming:Internal Users Only

09:56:23.176 Checking user criteria for Rule Incoming:Deny SpamHaus Blacklisted Senders

09:56:23.192 Created temp mail file <C:\Program Files\Marshal\MailMarshal\Queues\Incoming\~B52fa8e770000.000000000001.0004.mml>

09:56:23.192 TX: <250 recipient ok <Joanna.Goldfinch@buddlefindlay.com>>

09:56:23.317 RX: <DATA>

09:56:23.317 TX: <354 send the mail data, end with .>

09:56:23.739 Header Rewrite: Remove Exchange Version field X-MimeOLE: from "" to "Produced by Microsoft Exchange

"
0612 09:56:24.020   1 user(s) match rule - Content:Incoming:Bad Domains
0612 09:56:24.020 Name=U1\B52fa8e770000.000000000001.0004.mml Message level criterion TRUE
0612 09:56:24.020     Requesting Action <Content:Incoming:Bad Domains:MailTemplate> be run
0612 09:56:24.020     Requesting Action <Content:Incoming:Bad Domains:MoveMessage> be run
0612 09:56:24.020 Action MoveMessage for Component U1\B52fa8e770000.000000000001.0004.mml