On 2018-03-27 15:47, Syafril Hermansyah (syaf...@dutaint.co.id) wrote: >> Tue 2018-03-27 10:05:13.155: [104161] <-- 421-4.7.0 This message does not >> have authentication information or fails to pass >> Tue 2018-03-27 10:05:13.155: [104161] <-- 421-4.7.0 authentication checks. >> To best protect our users from spam, the >> Tue 2018-03-27 10:05:13.155: [104161] <-- 421-4.7.0 message has been >> blocked. Please visit >> Tue 2018-03-27 10:05:13.155: [104161] <-- 421-4.7.0 >> https://support.google.com/mail/answer/81126#authentication for more >> Tue 2018-03-27 10:05:13.155: [104161] <-- 421 4.7.0 information. >> a190si171785pge.436 - gsmtp > > Server gmail.com baru menerapkan semacam greylist sejak bulan lalu, tetapi > pakai > cara dia sendiri.
Maaf koreksi, setelah mendapat pencerahan dari altn.com, mail server gmail.com mulai implementasi MTA-STS (SMTP-STS Strict Transport Security) https://mta-sts.gmail.com/.well-known/mta-sts.txt version: STSv1 mode: testing mx: gmail-smtp-in.l.google.com mx: .gmail-smtp-in.l.google.com max_age: 86400 https://thehackernews.com/2016/03/smtp-sts-email-security.html --quote--> Despite so many messaging apps, Email is still one of the widely used and popular ways to communicate in this digital age. But are your Emails secure? We are using email services for decades, but the underlying 1980s transport protocol used to send emails, Simple Mail Transfer Protocol (SMTP), is ancient and lacks the ability to secure your email communication entirely. However, to overcome this problem, SMTP STARTTLS was invented in 2002 as a way to upgrade an insecure connection to a secure connection using TLS. But, STARTTLS was susceptible to man-in-the-middle attacks and encryption downgrades. SMTP STS: An Effort to Make Email More Secure Top email providers, namely Google, Microsoft, Yahoo!, Comcast, LinkedIn, and 1&1 Mail & Media Development, have joined forces to develop a new email standard that makes sure the emails you send are going through an encrypted channel and cannot be sniffed. Dubbed SMTP Strict Transport Security (SMTP STS), the new security standard will change the way your emails make their way to your inbox. <--- end of quote --- MDaemon juga akan segera implementasi MTA-STS yang dikenal juga dengan DANE Lite (DNS-based Authentication of Named Entities). -- syafril ------- Syafril Hermansyah MDaemon-L Moderators, MDaemon 18.0-64 Beta D, SP 5.5.1-64 Beta B Harap tidak cc: atau kirim ke private mail untuk masalah MDaemon. Masa depan bukan mrpkan terusan masa silam. Masa depan akan mrpkan rangkaian peristiwa yg diskontinyu. Kita hrs lupakan cara menghdpi masa silam utk menangani masa depan -- Charles Handy
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