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GMail does not require STARTTLS. I am sure you can send email to GMail accounts with unencrypted SMTP. Just look at the incoming "Received" headers. If they do
by biafra 15y ago
GMail does not require STARTTLS.
I am sure you can send email to GMail accounts with unencrypted SMTP. Just look at the incoming "Received" headers. If they do not contain a "cipher=" section, the connection was not encrypted.
I think what you mean is that GMail requires you to use https for their web interface.
- mct 15y agoI think what you mean is that GMail requires you to use https for their web interface. gmail requires STARTTLS (or ssmtp) when an authenticated user submits outbound mail to them via SMTP (http://support.google.com/mail/bin/answer.py?hl=en&answer=13287 http://support.google.com/mail/bin/answer.py?hl=en&answe...), which is what he may have been mis-remembering. But, yes, it is incorrect that all mail sent to gmail.com addresses is TLS encrypted.
- bigiain 15y agoI feel kinda dirty sticking up for Jeff here - but that means if you _know_ your outbound mail always uses TLS when available, then maybe the security-in-transit concerns are eliminated. (I don't even know where I'd start trying to find out if all my possible ways of sending myself mail can be conclusively determined to be using TLS though.)
- garethadams 15y agoThat would be a perfect counter argument, except the point mentioned in the article specifically related to getting passwords sent to you from other services.
- zwp 15y ago> GMail does not require STARTTLS. $ telnet smtp.gmail.com 587 Trying 173.194.67.108... Connected to gmail-smtp-msa.l.google.com. Escape character is '^]'. 220 mx.google.com ESMTP ea6sm27303065wib.5 HELO zwp 250 mx.google.com at your service AUTH PLAIN [elided] 530 5.7.0 Must issue a STARTTLS command first. ea6sm27303065wib.5 $ telnet smtp.gmail.com 587 Trying 173.194.67.109... Connected to gmail-smtp-msa.l.google.com. Escape character is '^]'. 220 mx.google.com ESMTP ff2sm43397967wib.9 HELO zwp 250 mx.google.com at your service MAIL FROM:<test@example.com> 530 5.7.0 Must issue a STARTTLS command first. ff2sm43397967wib.9
- quonn 15y agoThis is outgoing SMTP. It does not require it for _incoming_ SMTP.
- tantalor 15y agoGmail recommends (or requires) SSL for both IMAP[1] and POP[2]. [1] http://support.google.com/mail/bin/answer.py?hl=en&answer=78799 http://support.google.com/mail/bin/answer.py?hl=en&answe... [2] https://support.google.com/mail/bin/answer.py?hl=en&answer=181714 https://support.google.com/mail/bin/answer.py?hl=en&answ...
- techsupporter 15y agoPlease try your test again on port 25, which is the port that server-to-server e-mail would use, as the post above yours said that it is possible to send e-mail to @gmail.com without using STARTTLS. This is, in fact, not only possible but required. Otherwise, @gmail.com would be inaccessible to any e-mail address using an MTA that does not support or is not configured for TLS.