My content filter adds a disclaimer to the email, and then sends it using
sendmail:
/usr/sbin/sendmail -oi "$@" < email_with_disclaimer.$$
But, as I wrote earlier, I completely disabled the content filter, and sent
emails in different ways. And I saw that disabling the filter did not change
anything. I suspect the problem is with fetchmail, because before fetchmail
picks up the email, it’s in the mailbox of the email provider, and it’s already
duplicated!
--- Исходное сообщение ---
От кого: "Matus UHLAR - fantomas" <uh...@fantomas.sk>
Дата: 15 июня 2021, 10:42:42
On 15.06.21 10:22, yuryb wrote:
>Sorry, I was wrong about case # 2. I just ran tests and they showed that
>the second case shows up regardless of the no_address_mappings option! Why
>it didn’t appear before is not clear. Moreover, I noticed that this
>problem spontaneously appears and disappears. Yesterday, for example,
>letters to our remaining manager arrived in one copy, as it should be,
>although both managers who quit were indicated as recipients. Very
>strange. Perhaps it depends on the settings on the side of our provider,
>which changes them. This version is also confirmed by the fact that if the
>sender is our employee, the letter is never duplicated. I also checked
>your version: I disabled the filter and made sure that this does not solve
>problem # 2. (By the way, this filter adds a disclaimer to the emails we
>send, which is convenient when sending emails from different devices.) So I
>left the filter and no_address_mappings option enabled. Thank you for your
>feedback!
again:
>Apparently your content_filter "dfilt" causes the duplicate.
>what does it do?
you solve the problem on wrong side. no_address_mappings should usually
apply when re-injecting mail from content_filter.
your content filter seems to duplicate the mail, what does it do?
>>Here is the content of my "master.cf" file:
>>
>>smtp inet n - n - - smtpd
>> -o content_filter=dfilt:
>> -o receive_override_options=no_address_mappings
>>26 inet n - n - - smtpd
>> -o content_filter=dfilt:
>> -o receive_override_options=no_address_mappings
>>smtps inet n - n - - smtpd
>> -o content_filter=dfilt:
>> -o receive_override_options=no_address_mappings
>> -o smtpd_tls_wrappermode=yes
>> -o smtpd_sasl_auth_enable=yes
>> -o smtpd_client_restrictions=permit_sasl_authenticated,reject
>>587 inet n - n - - smtpd
>> -o content_filter=dfilt:
>> -o receive_override_options=no_address_mappings
>> -o smtpd_tls_wrappermode=yes
>> -o smtpd_sasl_auth_enable=yes
>> -o smtpd_client_restrictions=permit_sasl_authenticated,reject
>
>
>>dfilt unix - n n - - pipe
>> flags=Rq user=filter argv=/usr/local/etc/postfix/disclaimer -f ${sender} --
>>${recipient}
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
- Have you got anything without Spam in it?
- Well, there's Spam egg sausage and Spam, that's not got much Spam in it.
