[Samba] Samba AD Internal DNS, Postfix & Email Relay

Reindl Harald h.reindl at thelounge.net
Tue Feb 26 19:10:53 UTC 2019

frankly post output of "postconf -n" - anyways, this is *not* a samba topic

Am 26.02.19 um 17:15 schrieb Marco Shmerykowsky PE via samba:
> That parameter isn't defined in my main.cf file.
> Is I add it and leave it blank.  It still doesn't work.
> On 2/25/2019 11:41 PM, Reindl Harald wrote:
>> Am 25.02.19 um 22:39 schrieb Marco Shmerykowsky PE via samba:
>>> On 2/25/2019 3:36 AM, L.P.H. van Belle via samba wrote:
>>>> Hai Marco,
>>>> For you own domains, dont point postfix to your internal DNS only,
>>>> if done wrong you might miss dns info on the wan side and thats
>>>> mostlikely your error .
>>> Likely.  Here is the error (ignore the ip's - messed them
>>> up for this response):
>>> Feb 25 16:22:10 sce252 postfix/smtp[3114]: 0D1E86E3A6D:
>>> to=<marco at sce-engineers.com>, orig_to=<root>, relay=mail.panix.com[1
>>>]:587, delay=317791, delays=317743/0.02/48/0.1, dsn=4.1.8,
>>> status=deferred (host mail.xxxx.com[] said:
>>>   450 4.1.8 <root at sce252.internal.company.com>: Sender address
>>> rejected: Domain not found (in reply to RCPT TO comm
>>> and
>> there is no error
>> when you configure
>> http://www.postfix.org/postconf.5.html#reject_unknown_sender_domain you
>> get what you asked for and since at this point
>> @sce252.internal.company.com is not found the message is *temporary*
>> rejected with 450
>> either order postfix to get started later so that dns lookups are
>> working or remove that option

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