Ahoj, Dňa Sun, 8 Jul 2012 11:59:50 +0000 (UTC) Camaleón <noelamac@gmail.com> napísal: > > By mi search, the standard is SMTP + STARTTLS and not SSL + SMTP. > There are different implementations, all of them standarized: > > While imaps (tcp/993), pop3s (tcp/995) and smtps (tcp/587) make use of > specific computer ports, imap, pop3 and smtp using "STARTTLS" keep the > same ports that their non-encrypted counterparts (143/110/25) to > transmit clear text credentials protected. if smtps is standardized, then why i see this: grep 587 /etc/services submission 587/tcp # Submission [RFC4409] submission 587/udp but: grep smtps /etc/services ssmtp 465/tcp smtps # SMTP over SSL can you please tell me the RFC about SMTPS? > Well, when opening ports is not possible (consider a restricted > environment) or as Wikipedia¹ explains, independency and transparency > seen as a plus when using this extension. i know about differences both of the implementations. regards -- Slavko http://slavino.sk
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