Fist off, thank you for this great plugin guys. I have been using eshop for a few years now, and I am suddenly getting failed transaction emails as well, even though payments are successfully being made to PayPal (I believe this error started to appear after the most recent update).
Here is an example of the failed email message:
subject: Paypal IPN -A Failed Payment Ref:6E81096254371003V
An instant payment notification was received
from xxx@hotmail.com on 07/21/2012 at 11:21 PM
Details:
The transaction was not completed successfully. eShop could not validate the order.
mc_gross: 100.00
protection_eligibility: Eligible
address_status: confirmed
item_number1: shirt-pants001 : Shirt and Pants L Blue
tax: 0.00
item_number2: shirt-pants001 : Shirt and Pants L Black
payer_id: WBWU4M33WK6BS
address_street: 73 XXX avenue
payment_date: 16:21:37 Jul 21, 2012 PDT
payment_status: Completed
charset: windows-1252
address_zip: X8X 3X2
mc_shipping: 15.00
mc_handling: 0.00
first_name: Michael
mc_fee: 3.20
address_country_code: CA
address_name: Michael XXX Goalie Training
notify_version: 3.5
custom: 5c76de5746601516e197a06170b6a6fd500b38d5b6feb8.28860840
payer_status: verified
business: info@hockeyunderwear.net
address_country: Canada
num_cart_items: 2
mc_handling1: 0.00
mc_handling2: 0.00
address_city: Hamilton
verify_sign: AVIMPgoSSXAB0TFqT6zIppDkcJqQAmsDoLIz9GY010yqoB0nGLXTVW30
payer_email: xxx@hotmail.com
mc_shipping1: 15.00
mc_shipping2: 0.00
tax1: 0.00
tax2: 0.00
txn_id: 6E81096254371003V
payment_type: instant
payer_business_name: Michael XXX Goalie Training
last_name: XXX
address_state: Ontario
item_name1: Stanfields Pro Hockey Underwear
receiver_email: info@hockeyunderwear.net
item_name2: Stanfields Pro Hockey Underwear
payment_fee: 3.20
quantity1: 1
quantity2: 1
receiver_id: 4ZGV5GNVNLSJA
txn_type: cart
mc_gross_1: 60.00
mc_currency: USD
mc_gross_2: 40.00
residence_country: CA
transaction_subject: 5c76de5746601516e197a06170b6a6fd500b38d5b6feb8.28860840
payment_gross: 100.00
ipn_track_id: 571e9dabb0c31
Regards, Your friendly automated response.