Re: antispoofing with dovecot submission
On 15-03-2024 08:10, Aki Tuomi via dovecot wrote: On 14/03/2024 17:28 EET dovecot--- via dovecot wrote: it is possible to do antispoofing, like reject_authenticated_sender_login_mismatch from postfix ? I could be wrong, but i believe dovecot submission is only a proxy to postfix submission. Dovecot does not directly delivery mail to the world. Meaning the mail is still passing through postfix and reject_authenticated_sender_login_mismatch would still be applied. Indeed it does, I use this exact configuration and it works as expected. - Kees. My follow up question would be does dovecot queue the mail or proxy it live? If postfix rejected the submission based on something like reject_authenticated_sender_login_mismatch does the email client get sent the error live by dovecot submission, or would a type of backscatter bounce be created between postfix and dovecot? Dovecot submission is only a relay. It will not queueing or anything like that, it always requires a live, functional MTA to back it up. If MTA does not reject the mail during sending, then what happens next is up to the MTA. Aki ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: antispoofing with dovecot submission
> On 14/03/2024 17:28 EET dovecot--- via dovecot wrote: > > > > it is possible to do antispoofing, like > > reject_authenticated_sender_login_mismatch from postfix ? > > > I could be wrong, but i believe dovecot submission is only a proxy to postfix > submission. Dovecot does not directly delivery mail to the world. Meaning the > mail is still passing through postfix and > reject_authenticated_sender_login_mismatch would still be applied. > > My follow up question would be does dovecot queue the mail or proxy it live? > If postfix rejected the submission based on something like > reject_authenticated_sender_login_mismatch does the email client get sent the > error live by dovecot submission, or would a type of backscatter bounce be > created between postfix and dovecot? Dovecot submission is only a relay. It will not queueing or anything like that, it always requires a live, functional MTA to back it up. If MTA does not reject the mail during sending, then what happens next is up to the MTA. Aki ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: antispoofing with dovecot submission
it is possible to do antispoofing, like reject_authenticated_sender_login_mismatch from postfix ? I could be wrong, but i believe dovecot submission is only a proxy to postfix submission. Dovecot does not directly delivery mail to the world. Meaning the mail is still passing through postfix and reject_authenticated_sender_login_mismatch would still be applied. My follow up question would be does dovecot queue the mail or proxy it live? If postfix rejected the submission based on something like reject_authenticated_sender_login_mismatch does the email client get sent the error live by dovecot submission, or would a type of backscatter bounce be created between postfix and dovecot? ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
antispoofing with dovecot submission
Hi, it is possible to do antispoofing, like reject_authenticated_sender_login_mismatch from postfix ? ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org