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The mail system
: host mail.powersync.co.th[119.59.120.56] said:
550-Your message was classified as SPAM. Please add more content, cut down
on 550-HTML links, use fewer naughty words etc. Also, ask your IT dept to
make 550-sure your mailserver has REVERSEDNS, SPF and is not on any black
lists. 550 Your score: 130 (in reply to end of DATA command)