These are the details of a transaction on ebay taken from my paypal account:

Instant Payment Notification (IPN) details



Message ID1XJ079oplkiujhhy
Date/time created12/18/2017 03:25 PST
Original/ResentOriginal
Latest delivery attempt date/time12/19/2017 02:10 PST
Notification URLhttp://mysite/ipn_main_handler.php
HTTP response codeWhat's this?404
Delivery statusRetrying
No. of retries14
Transaction ID60EDDERKLJUYYHY
IPN typeTransaction made
IPN Messageood.&last_name=Furst&address_state=MA&item_name1=VINTAGE "PIRATE SKULL" # 337 STILL GLOWS IN THE DARK&[email protected]&payment_fee=1.16&shipping_discount=0.00&quantit y1=1&insurance_amount=0.00&receiver_id=tymkjjugtr&txn_type=cart&item_name=VINTAG E "PIRATE SKULL" # 337 STILL GLOWS IN THE DARK&discount=0.00&mc_gross_1=20.99&mc_currency=USD&item_number=292374467772&res idence_country=US&shipping_method=Default&transaction_subject=&payment_gross=29. 49&ipn_track_id=asenjhkiiku


An IPN was sent to my site resulting in a 404 error.

What is the best solution for these IPN errors?
Can the ipn_main_handler.php file respond to outside transactions with a generic answer avoiding ipn errors?

Any help would be appreciated