[pfx] Re: Why is Content-Transfer-Encoding: 8bit used?

Andreas Kuhlen via Postfix-users: > I have two mail servers that use different content transfer encodings > for the same content. Based on the configuration, I can't work out > why this is the case. When Postfix bounces an 8bitmime message, then the bounce message will also be 8bitmime. Otherwise

[pfx] Re: Why is Content-Transfer-Encoding: 8bit used?

Steffen Nurpmeso via Postfix-users: > But say, why does it seem to not automatically generate the > necessary MIME stuff when it reads a non-MIME email? Or is that > a miss on my configuration side? There is no need for doing that. Absent MIME headers, a message must be 7bit US-ASCII text. The d

[pfx] Re: Why is Content-Transfer-Encoding: 8bit used?

Andreas Kuhlen via Postfix-users: > Both postfix servers announce "250-8BITMIME" support. > And no special rules have been defined for handling 8bit character encoding. > > So that doesn't explain what is happening. You need to figure out where the difference happens: before Postfix, in Postfix b

[pfx] Re: Why is Content-Transfer-Encoding: 8bit used?

Both postfix servers announce ‘250-8BITMIME’ support. And no special rules have been defined for handling 8bit character encoding. So that doesn't explain what is happening. Am 10.03.2025 um 21:51 schrieb Wietse Venema via Postfix-users: Wietse Venema via Postfix-users: Andreas Kuhlen via Post

[pfx] Re: Why is Content-Transfer-Encoding: 8bit used?

Wietse Venema via Postfix-users wrote in <4zbtzg0hf2zj...@spike.porcupine.org>: |Wietse Venema via Postfix-users: |> Andreas Kuhlen via Postfix-users: |>> I have two mail servers that use different content transfer encodings |>> for the same content. Based on the configuration, I can't work ou

[pfx] Re: Why is Content-Transfer-Encoding: 8bit used?

Andreas Kuhlen via Postfix-users wrote in : |Thank you very much, Wietse. | |The emails are sent successfully, so there was no bounce. | |Both email accounts are integrated in Thunderbird. One account on server |A, the other on server B. According to your statement, it is the MUA |that de

[pfx] Re: Why is Content-Transfer-Encoding: 8bit used?

Wietse Venema via Postfix-users: > Andreas Kuhlen via Postfix-users: > > I have two mail servers that use different content transfer encodings > > for the same content. Based on the configuration, I can't work out > > why this is the case. > > When Postfix bounces an 8bitmime message, then the bou

[pfx] Re: Why is Content-Transfer-Encoding: 8bit used?

Thank you very much, Wietse. The emails are sent successfully, so there was no bounce. Both email accounts are integrated in Thunderbird. One account on server A, the other on server B. According to your statement, it is the MUA that determines the content transfer encoding. Why Thunderbird on

[pfx] Re: dmarc, dkim & spf failed but that message was delivered anyway

> On 10. 3. 2025., at 09:02, Petko Manolov wrote: > > I was thinking about something similar. However, this filtering rule would > reject all mail that comes from postfix.org mailing > lists, which isn't an > option. Maybe this one combined with another rule, but i need

[pfx] Re: dmarc, dkim & spf failed but that message was delivered anyway

On 25-03-10 07:34:41, Dusan Obradovic via Postfix-users wrote: > > It is not difficult to override policy published and unconditionally reject > DMARC failures. This does not follow RFC7489 guidelines: > > /etc/postfix/milter_header_checks: > /^Authentication-Results:.+dmarc=fail/ REJECT I

[pfx] Re: dmarc, dkim & spf failed but that message was delivered anyway

> On 6. 3. 2025., at 09:28, Petko Manolov via Postfix-users > wrote: > > The goal was to have my dmarc config as tight as possible. Namely: > > SPFSelfValidate true > SPFIgnoreResults true > RejectFailures true > > Quoting dmarc documentation re the latter: " If set, messages will be > rej