Would anybody be interested in a patch to have courier check to see that the <mail from:> address exists if it is supposedly from the local domain?


Jeff Jansen wrote:


On Wednesday 13 August 2003 23:06, Bill Long wrote:


I did some testing by manually connecting to the smtp port. It seems
my courier setup doesn't check the validity of the sender(mail from:) if
the recipient is on the same domain(rcpt to).



I don't think courier EVER checks the 'mail from:' command. It checks to make sure that it's a syntactically valid address, but what else would it check - that the return address is a real account on this system? I often send out mail using an AOL account as the return address because that's the account I give when I've got to give an email address on some web form, etc. (And I certainly don't want to have to actually *use* AOL in order to do this! :-)









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