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While setting up Postfix and Dovecot, I was wondering... Why do we use STARTTLS when there are dedicated TLS ports for the same protocols?
STARTTLS adds an extra round-trip to the TLS handshake, so I'd rather avoid it if there are no downsides...
@alef
@angristan

@codewiz @angristan For IMAP/POP maybe but SMTP only listens to port 25 AFAIK.
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