Hi Viktor, # postconf -d | grep smtpd_discard postscreen_discard_ehlo_keyword_address_maps = $smtpd_discard_ehlo_keyword_address_maps postscreen_discard_ehlo_keywords = $smtpd_discard_ehlo_keywords proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps $sender_bcc_maps $recipient_bcc_maps $smtp_generic_maps $lmtp_generic_maps $alias_maps $smtpd_client_restrictions $smtpd_helo_restrictions $smtpd_sender_restrictions $smtpd_relay_restrictions $smtpd_recipient_restrictions $address_verify_sender_dependent_default_transport_maps $address_verify_sender_dependent_relayhost_maps $address_verify_transport_maps $fallback_transport_maps $lmtp_discard_lhlo_keyword_address_maps $lmtp_pix_workaround_maps $lmtp_sasl_password_maps $lmtp_tls_policy_maps $mailbox_command_maps $mailbox_transport_maps $postscreen_discard_ehlo_keyword_address_maps $rbl_reply_maps $sender_dependent_default_transport_maps $sender_dependent_relayhost_maps $smtp_discard_ehlo_keyword_address_maps $smtp_pix_workaround_maps $smtp_sasl_password_maps $smtp_tls_policy_maps $smtpd_discard_ehlo_keyword_address_maps $smtpd_milter_maps $virtual_gid_maps $virtual_uid_maps smtpd_discard_ehlo_keyword_address_maps = smtpd_discard_ehlo_keywords = chunking
# dnf info postfix Last metadata expiration check: 1:43:17 ago on Fri 19 Mar 2021 02:06:32 PM CDT. Installed Packages Name : postfix Epoch : 2 Version : 3.5.8 Release : 1.el8 Architecture : x86_64 Size : 4.4 M Source : postfix-3.5.8-1.el8.src.rpm Repository : @System From repo : baseos Summary : Postfix Mail Transport Agent URL : http://www.postfix.org License : (IBM and GPLv2+) or (EPL-2.0 and GPLv2+) Description : Postfix is a Mail Transport Agent (MTA). So I guess it was compiled in the Postfix package. What are the ramifications of "smtpd_discard_ehlo_keywords = chunking" vs "smtpd_discard_ehlo_keywords = "? Is the package manager disabling BDAT by discarding chunking? Sorry, I'm not finding much info on BDAT. I'm not sure if a module is needed that isn't installed to implement BDAT or there is some other reason the package manager might have disabled it. Not sure if we need it or will need it in the future for some reason. Thanks for all your expert help! Ken > On Mar 19, 2021, at 3:34 PM, Viktor Dukhovni <postfix-us...@dukhovni.org> > wrote: > > No postscreen(8) has nothing to do with it, it just defaults to whatever > smtpd(8) defaults to. The real issue is that you have (whether as a > compiled in default, or in fact in main.cf) a non-empty setting for: > > smtpd_discard_ehlo_keywords = chunking > > if that's also reported by "postconf -d", then whoever compiled your Postfix > package decided to change the upstream default. If you don't like that choice > you can set an explicit empty value in main.cf and complain to your package > maintainers: > > smtpd_discard_ehlo_keywords = > > -- > Viktor. >
