Hello, Stuart.
I hope you added some kind of changing hash token to localpart of MAIL FROM
so
that spammers can't use your service as an open bounce relay.
Humm... no not really, and I wouldn't know how to do this.
However I am checking the database to know if the destination addresses are
right, and also to know the source e-mail address where it can be the only
destination.
The spammer should also probide the exact proper ecard ID, which is
difficult to guess.
I have used a personnalised header (I didn't find any other) 'X-msgid' to
pass the ecard ID. I check against this header in the script and with the
db.
Regards,
Daniel
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