On Fri, 21 Sep 2018 22:05:17 +0300 Andrei Borzenkov <arvidjaar@gmail.com> wrote:
21.09.2018 20:48, James Knott пишет:
On 09/21/2018 01:38 PM, Per Jessen wrote:
Google (gmail) I suspect does not allow talking on :25 without encryption, or the email can be easily read on transit. No, Google does not require TLS.
Actually, it does. I just tried setting my smtp server to port 25 & no security. I got this error message:
An error occurred while sending mail. The mail server responded: 5.7.0 Must issue a STARTTLS command first. i26-v6sm9327158ioj.33 - gsmtp. Please verify that your email address is correct in your account settings and try again.
So, it would appear STARTTLS is mandatory,
bor@bor-Latitude-E5450:~/src/systemd$ telnet gmail-smtp-in.l.google.com. 25 Trying 108.177.14.27... Connected to gmail-smtp-in.l.google.com. Escape character is '^]'. 220 mx.google.com ESMTP g25-v6si21473003lfl.47 - gsmtp HELO mail.example.com 250 mx.google.com at your service MAIL FROM:<test@example.com> 250 2.1.0 OK g25-v6si21473003lfl.47 - gsmtp
You and Per have noticed that gmail-smtp-in.l.google.com resolves to different addresses for each of you, I presume? James used a different address again. So apparently google has inconsistent policies or has different policies at different locations. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org