i can't send mail with SMTP only phpmail
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The only setup to use the PHP mail() function is to have a valid Email address in your x10hosting's free-hosting account
external [ SMTP ] is blocked on x10hosting's free-hosting servers
all Email must go out through outbound spam filters on 10hosting's SMTP server - to be scanned for spam and phishing and other test - messages with no body content - and HTML-only mail (mail with no plain text part) - and messages with no subject - and messages that just say "Testing" (or like that) - and anything else that looks "spammy" (as far as the outbound mail filters are concerned) will be silently discarded - or sometimes the transfer to the SMTP server fails - you will not receive any notice when it fails
spoofing the [ From ] header is not allowed - Emails with the [ From ] header not set with a working Email address that exists and is actually part of your x10hosting's free-hosting account will be silently discarded - you will not receive any notice
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