Question about smtp encryption

[rebek86]

I found in my logs many entries about rejected connections.

Feb 7 07:04:38 mail postfix/smtpd[4113]: NOQUEUE: reject: RCPT from r67.web.sophos.com[207.211.34.67]: 550 5.7.1 Session encryption is required; from=<no-reply@sophos.com> to=<bla@example.com> proto=ESMTP helo=<r67.web.sophos.com>

I'm absolutely for encryption! But is it meaningful to prescribe the smtp encryption mandatory, if the mailserver is used productive?

Could I solve this problem by simply changing the following value in smtp_tls_security_level = may?

Thanks!

[andryyy]

Hi, you just used the toggle "enforce incoming encryption" in the mailbox settings.

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Am 07.02.2017 um 08:34 schrieb rebek86 ***@***.***>: I found in my logs many entries about rejected connections. Feb 7 07:04:38 mail postfix/smtpd[4113]: NOQUEUE: reject: RCPT from r67.web.sophos.com[207.211.34.67]: 550 5.7.1 Session encryption is required; ***@***.***> ***@***.***> proto=ESMTP helo=<r67.web.sophos.com> I'm absolutely for encryption! But is it meaningful to prescribe the smtp encryption mandatory, if the mailserver is used productive? Could I solve this problem by simply changing the following value in smtp_tls_security_level = may? Thanks! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[rebek86]

Thanks!

Sorry, I'm an blockhead 😕

[sonicsharp]

Hi, Sorry to reopen the issue, I need to know where "enforce incoming encryption" in mailbox settings.. I cannot find it in my mailcow. Please help.

[mkuron]

That's in the user's settings. It cannot be set server-wide. Also, be careful turning it on as it will quite likely cause some messages to be rejected.