Thank you Josh, I got it now. I had to relax 2 SPAM settings, but didn’t need to ignore authentication for local machines. If someone later on needs details, let me know. Thanks again! J/C
> On 4. Aug 2022, at 16:24, Josh Fisher <jfis...@jaybus.com> wrote: > > > On 8/2/22 16:46, Justin Case wrote: >> The container uses the container ID as hostname. nothing I can do about it >> with DNS. >> I will retire the Synology mail server at somepoint but that is months in >> the future. >> >> I disabled authentication for local networks, but still: >> 504 5.5.2 <3422f1072002>: Helo command rejected: need fully-qualified >> hostname > > > Fix the Synology mail server instead of the container. Look at advanced > security rules (Mail Delivery > Security > Advanced) for the 'Reject HELO > hostnames without fully qualified domain name (FQDN)' and 'Reject unknown > HELO hostnames' rule settings. > > >> >>> On 2. Aug 2022, at 22:29, dmitri maziuk <dmitri.maz...@gmail.com> wrote: >>> >>> On 2022-08-02 2:16 PM, Justin Case wrote: >>>> I run the mailserver put its basically a tightly baked postfix dovecot >>>> under Synology DSM UI. So I won’t manually change config files. But >>>> “Ignore authorization for LAN connections” sounds reasonable, I have >>>> activated that now. Lets see if that helps. >>> It has to know 172.x is a "LAN" connection... if they don't have a way to >>> set $mynetworks, I think you might want to add a raspi to your home lab to >>> run a proper postfix instance. ;) >>> >>>> This does, however, not solve the problem that the hostname is not an FQDN >>>> and that it cannot be overridden with bsmtp. So I am still 100% away from >>>> a working solution :( >>> It's common enough, half of them get "localhost" from the resolver anyway >>> and happily stick it in the mail header. I tend to specify From: addresses >>> like "win-acme-on-server-X@mydomain" to know where it came from -- and if >>> anyone decides to reply, they can keep the bounce. >>> >>> As far as mail delivery goes, FQDN is not needed for anything. It's only >>> there for that UCE check which should be disabled for "LAN connections". >>> >>> PS. if bsmtp gets its hostname from the resolver, you might be able to fool >>> it by setting up a nameserver for docker ips. Or maybe get names from >>> docker network -- but I never looked into that. >>> >>> Dima >>> >>> >>> _______________________________________________ >>> Bacula-users mailing list >>> Bacula-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/bacula-users >> >> >> _______________________________________________ >> Bacula-users mailing list >> Bacula-users@lists.sourceforge.net >> <mailto:Bacula-users@lists.sourceforge.net> >> https://lists.sourceforge.net/lists/listinfo/bacula-users >> <https://lists.sourceforge.net/lists/listinfo/bacula-users> > > > _______________________________________________ > Bacula-users mailing list > Bacula-users@lists.sourceforge.net <mailto:Bacula-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/bacula-users > <https://lists.sourceforge.net/lists/listinfo/bacula-users>
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