Authorize.net SIM errors after changing hosts

[CarolineBogart]

The site was moved from Hostgator to Wiredtree on May 6.
Client received authorize.net error message stating her client had a successful transaction but that communication with the store failed (and so the order was NOT stored, kinda weird in that they did take the customer's money but we don't know for what items).
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The merchant's message from authnet is: Authorize.Net Merchant, Your script timed out while we were trying to post transaction results to it. Transaction ID: 6166661801 Transaction Result: This transaction has been approved. The following message was displayed to the customer:
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An error occurred while trying to report this transaction to the merchant. An e-mail has been sent to the merchant informing them of the error. The following is the result of the attempt to charge your credit card. This transaction has been approved
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The Zen Cart display at the credit card submission point is An error occurred while trying to report this transaction to the merchant. An e-mail has been sent to the merchant informing them of the error. The following is the result of the attempt to charge your credit card. This transaction has been approved. It is advisable for you to contact the merchant to verify that you will receive the product or service.
================ ================ ================ ================ ================ ================
The SIM cache error log: May-11-2014 06:23:32
=================================
Response Code: .
Response Text: Results Received back from Authorizenet: Array (
[HashValidationValue] => F82F610E1E5A7CFE004BC773B942497C
[HashMatchStatus] => FAIL
[url] => https://secure.authorize.net/gateway/transact.dll
)

To address this issue i changed the hash at authnet and the store but that didn't work. So I changed the hash to one character and it still didn't work. So I think the hash message is a red herring.
After reading many of DrByte's posts I realized that this site is running SIM rather than AIM. Changing to AIM fixed everything except one thing.
The SIM method had successfully taken the customer to authnet to accept PCI sensitive info. The AIM method is taking the cc info on the merchant's domain.
Is there any way to go offsite to transact.dll and AIM?
thank you so much for your help!

What version of Zen Cart are you using? 1.39h
Has your site been upgraded? When? From what version(s)? not for 1 year+
If you've upgraded, HOW did you upgrade? (official upgrade procedure or an automated script from your hosting company?) n/a
What plugins/addons have you installed? When? If your problems are payment-related, what payment module(s) are you using? If it's shipping-related, which shipping module(s) are you using? authorize.net SIM authorize.net AIM
HOW did you install Zen Cart? (upload via FTP and run zc_install, or a one-click install from your hosting company? (one-click installs might mean you don't have enough information about your site/server to make customizations easily)) FTP, zc install, manual database creation
What version of PHP and MySQL is your server using? (See Admin->Tools->Server Info) PHP Version: 5.3.28 (Zend: 2.3.0) 5.5.37-MariaDB
WHEN did the problem "start"? How does that compare with other events of your hosting company, changes you've made to your site files/addons, or your admin settings, etc? After moving the site from one hosting company to another.
If this is your first store, have you tested all aspects of transactions before going live? It's been live for years.
In what ways is your site customized or different from a brand new uncustomized install? Template is customized; easy populate; cross sell; additional product images; CAlifornia zone tax
Please post your site URL* so we can take a look at it. http://bit.ly/QAUIdm
If you're encountering problems that could be related to your server or hosting company, include the name of your hosting company (not their URL). wiredtree.com

[CarolineBogart]

I am terribly sorry about the format. No matter what I do it loses all of its new line feeds. Is this a forum bug? I'm putting in manual Enters and it's still doing it.

[DrByte]

Is there any way to go offsite to transact.dll and AIM?

No. AIM only takes card info directly on your site. It expects you to have SSL enabled on your site so it can do secure encrypted communication with the collected sensitive informaiton.

[DrByte]

Given that you've changed hosts, you might need to update your Authorize.net account to allow transactions from your new server's IP address.
And you might need to re-do many of the setup steps here: http://www.zen-cart.com/content.php?...payment-module

Remember, the "md5 hash code" is a word/phrase that you must enter both in your Authnet account and you your ZC store admin's SIM module settings. If you don't enter the EXACT same word/phrase in both, then payments won't work correctly.

Also, if your new server has any URL-rewriting going on (ie: if you added a so-called "seo plugin" for "pretty urls") then that might be causing problems with the communication completing.

You could also ask Authorize.net tech support if their nameservers correctly resolve your site's address to the new IP address. Only their senior tech staff would comprehend that question though.