Paypal IPN orders not showing

My problem is similar:

I am using ZenCart 1.3.8a and have turned on debugging. I get all of the following messages when that I make a purchase:

IPN DEBUG message (1239077701_O2D6) #1
Keys for submission: Array ( [charset] => iso-8859-1 [lc] => US [page_style] => Primary [custom] => zenid=peasbqm5h8k9q4fa7dpnr6ibu1 [business] => BTVAUVDCUHH5A [return] => http://mybabys1st.net/cart/index.php?main_page=checkout_process&referer=paypal [cancel_return] => http://mybabys1st.net/cart/index.php?main_page=checkout_payment [shopping_url] => http://mybabys1st.net/cart/index.php?main_page=shopping_cart [notify_url] => http://mybabys1st.net/cart/ipn_main_handler.php [redirect_cmd] => _xclick [rm] => 2 [bn] => zencart [mrb] => R-6C7952342H795591R [pal] => 9E82WJBKKGPLQ [first_name] => Web [last_name] => Master [address1] => 6118 N. Sheridan Rd., #1209 [city] => Chicago [state] => FL [zip] => 60660 [country] => US [email] => [email protected] [H_PhoneNumber] => 7732066054 [night_phone_a] => 773 [night_phone_b] => 206 [night_phone_c] => 6054 [day_phone_a] => 773 [day_phone_b] => 206 [day_phone_c] => 6054 [no_shipping] => 1 [upload] => 1 [currency_code] => USD [cmd] => _ext-enter [item_name] => My Baby’s 1st Purchase [item_number] => Store Receipt [amount] => 1.07 [shipping] => 0.00 [tax] => 0.00 [tax_cart] => 0.00 )

IPN DEBUG message (1239077743_4Ofp) #1
IPN PROCESSING INITIATED. *** Originating IP: 66.211.170.66 notify.paypal.com
EMAIL_FOOTER_COPYRIGHT
EMAIL_DISCLAIMER
EMAIL_SPAM_DISCLAIMER

IPN DEBUG message (1239077743_4Ofp) #2
IPN INFO - POST VARS received (sorted): Array ( [business] => [email protected] [charset] => windows-1252 [custom] => zenid=peasbqm5h8k9q4fa7dpnr6ibu1 [first_name] => Theodore [handling_amount] => 0.00 [item_name] => My Baby s 1st Purchase [item_number] => Store Receipt [last_name] => Gibbs [mc_currency] => USD [mc_fee] => 0.33 [mc_gross] => 1.07 [notify_version] => 2.7 [payer_email] => [email protected] [payer_id] => H9QY9EYQTEZAA [payer_status] => verified [payment_date] => 21:15:41 Apr 06, 2009 PDT [payment_fee] => 0.33 [payment_gross] => 1.07 [payment_status] => Completed [payment_type] => instant [protection_eligibility] => Ineligible [quantity] => 1 [receiver_email] => [email protected] [receiver_id] => BTVAUVDCUHH5A [residence_country] => US [shipping] => 0.00 [tax] => 0.00 [transaction_subject] => zenid=peasbqm5h8k9q4fa7dpnr6ibu1 [txn_id] => 5Y707855NX9507637 [txn_type] => web_accept [verify_sign] => AlkZIurcEvp3C-QVXSxdEuArDl87AFQTr49HoEB70SIPZUOPQUKoC3LQ )

IPN DEBUG message (1239077743_4Ofp) #4
IPN INFO - Confirmation/Validation response SUCCESS

IPN DEBUG message (1239077743_4Ofp) #3
IPN INFO - POST VARS to be sent back for validation: To: www.paypal.com:80 POST /cgi-bin/webscr HTTP/1.1 Host: www.paypal.com Content-type: application/x-www-form-urlencoded Content-length: 831 Connection: close Array ( [transaction_subject] => zenid=peasbqm5h8k9q4fa7dpnr6ibu1 [payment_date] => 21:15:41 Apr 06, 2009 PDT [txn_type] => web_accept [last_name] => Gibbs [residence_country] => US [item_name] => My Baby s 1st Purchase [payment_gross] => 1.07 [mc_currency] => USD [business] => [email protected] [payment_type] => instant [protection_eligibility] => Ineligible [verify_sign] => AlkZIurcEvp3C-QVXSxdEuArDl87AFQTr49HoEB70SIPZUOPQUKoC3LQ [payer_status] => verified [tax] => 0.00 [payer_email] => [email protected] [txn_id] => 5Y707855NX9507637 [quantity] => 1 [receiver_email] => [email protected] [first_name] => Theodore [payer_id] => H9QY9EYQTEZAA [receiver_id] => BTVAUVDCUHH5A [item_number] => Store Receipt [handling_amount] => 0.00 [payment_status] => Completed [payment_fee] => 0.33 [mc_fee] => 0.33 [shipping] => 0.00 [mc_gross] => 1.07 [custom] => zenid=peasbqm5h8k9q4fa7dpnr6ibu1 [charset] => windows-1252 [notify_version] => 2.7 [cmd] => _notify-validate )

IPN DEBUG message (1239077743_4Ofp) #5
Breakpoint: 1 - Collected data from PayPal notification

IPN DEBUG message (1239077743_4Ofp) #7
IPN FATAL ERROR :: Transaction did not validate

IPN DEBUG message (1239077743_4Ofp) #6
IPN WARNING :: Transaction email address NOT matched. From IPN = [email protected] | [email protected] From CONFIG = BTVAUVDCUHH5A

IPN DEBUG message (1239077751_YkPV) #1
IPN INFO - POST VARS to be sent back for validation: To: www.paypal.com:80 POST /cgi-bin/webscr HTTP/1.1 Host: www.paypal.com Content-type: application/x-www-form-urlencoded Content-length: 101 Connection: close Array ( [cmd] => _notify-sync [tx] => 5Y707855NX9507637 [at] => Ntsnj**********CTarO )

IPN DEBUG message (1239077751_YkPV) #3
PDT Returned Data Array ( [transaction_subject] => zenid=peasbqm5h8k9q4fa7dpnr6ibu1 [payment_date] => 21:15:41 Apr 06, 2009 PDT [txn_type] => web_accept [last_name] => Gibbs [residence_country] => US [item_name] => My Baby s 1st Purchase [payment_gross] => 1.07 [mc_currency] => USD [business] => [email protected] [payment_type] => instant [protection_eligibility] => Ineligible [payer_status] => verified [tax] => 0.00 [payer_email] => [email protected] [txn_id] => 5Y707855NX9507637 [quantity] => 1 [receiver_email] => [email protected] [first_name] => Theodore [payer_id] => H9QY9EYQTEZAA [receiver_id] => BTVAUVDCUHH5A [item_number] => Store Receipt [handling_amount] => 0.00 [payment_status] => Completed [payment_fee] => 0.33 [mc_fee] => 0.33 [shipping] => 0.00 [mc_gross] => 1.07 [custom] => zenid=peasbqm5h8k9q4fa7dpnr6ibu1 [charset] => windows-1252 )

IPN DEBUG message (1239077751_YkPV) #2
IPN INFO - Confirmation/Validation response SUCCESS

tedgibbs:

IPN DEBUG message (1239077743_4Ofp) #6
IPN WARNING :: Transaction email address NOT matched.
From IPN = [email protected] | [email protected]
From CONFIG = BTVAUVDCUHH5A

IPN DEBUG message (1239077743_4Ofp) #7
IPN FATAL ERROR :: Transaction did not validate

It looks like you've got a non-email-address entered in your PayPal account settings in Zen Cart.

I was able to get everything to function, but I am VERY concerned about security.

First of all, how much encryption is required? I had to turn off a PayPal setting called "Block Non-encrypted Website Payment" in order to have my purchased items show up in ZenCart. I am using PayPal encrypted buttons, which are supposed to help with help the aforementioned encryption setting turned to on.

According to PayPal, ZenCart's shopping cart is secure. Should I rely on other methods of security?

Zen Cart doesn't support the use of 'encrypted buttons' in PayPal.
Is there a very specific reason why you were enabling that option? Or were you just enabling it because it "sounded good"?

If you need to have the 'encrypted buttons' option turned on for a particular reason, then you'll not be able to use the PayPal Website Payments Standard module in Zen Cart. However, you'll be fine with Express Checkout instead, since it doesn't use the PayPal buttons technology for initiating transactions (Express Checkout is actually more reliable anyway).