Email pipe to php script working only sometimes

I have a php pipe script that receives an email, takes an attached *.csv from it and parses it.

However, when the email is sent from where it is supposed to be coming from, it silently errors. But when I take that sa开发者_如何学编程me email and resend it from my address it goes through just fine. is there any simple reason it could be doing this?

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try and save some information about the email in a logfile before anything else, then some more info as you parse it. This way you get a more better understanding of what is happening

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Is the email youa re sending from a real email? There may be a setting that allows emails to be sent from a valid user.

What happens if you chown the script to be the user you want to send the email from. Does it work then?