Aw: Re: sender issue with sasl user

If I have setup this: smtpd_sender_restrictions = reject_sender_login_mismatch does it work? Thank you > Gesendet: Dienstag, 06. Dezember 2022 um 09:33 Uhr > Von: "Benny Pedersen" > An: postfix-users@postfix.org > Betreff: Re: sender issue with sasl user > > linux...@gmx.net skrev den

sender issue with sasl user

Dear list, I found that when a sasl user passed the authentication, it can send email with any sender address, not only the sasl user itself. This may cause our mailsystem to be abused. How can I setup postfix to stop this behavior? Thanks in advance.

Aw: Re: relay server port listening on all or local?

It’s via HTTP API to post messages to gateway which then relay messages out to internet. Thanks. > Gesendet: Donnerstag, den 01.12.2022 um 17:25 Uhr > Von: "Viktor Dukhovni" > An: postfix-users@postfix.org > Betreff: Re: relay server port listening on all or local? > > On Thu, Dec 01, 2022

relay server port listening on all or local?

dear list, I am using postfix as mail relay which is deployed on gateway for internal users. This relay send mail out only, doesn't accept messages. My question is, do I need to make the relay server port 25 listened on 0.0.0.0? or just 127.0.0.1 should work? Thanks

secondary MX and SPF

dear list, when secondary MX server forwards messages to primary MX, how can I setup SPF policy to make them not breaking SPF? Thanks

Aw: Re: where to put RBL settings

Thank you very much for all the helps. So I changed it to: smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_policy_service unix:private/policyd-spf, reject_rbl_client zen.spamhaus.org, reject_rbl_client

SPF questions

Dear List, I have enabled policyd-spf in postfix: smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_policy_service unix:private/policyd-spf but can you help that, when a SPF check fails, where should I setup the reject action?

where to put RBL settings

dear list,   Currently I have these rbl settings in main.cf:   smtpd_client_restrictions = permit_mynetworks,         permit_sasl_authenticated,         reject_unauth_destination,         reject_rbl_client zen.spamhaus.org,         reject_rbl_client bl.spamcop.net,         permit   Is

when to reload postfix and when not?

dear users,   I updated these two file:   virtual_alias_domains virtual_alias_maps   and run postmap on the second.   Do i need to run "service postfix reload" for this change?   Thanks.