On 10/24/2017 10:20 AM, cac...@quantum-equities.com wrote:
>
> On 10/23/2017 11:55 AM, Wietse Venema wrote:
>> cac...@quantum-equities.com:
>>> On 10/21/2017 11:25 AM, Wietse Venema wrote:
>>>> cac...@quantum-equities.com:
>>>>> How does DNS know where mail.example1.com is? Should I set it in
>>>>> my registrar, in the mail system, in Apache as a virtual domain,
>>>>> or where?
>>>> Normally, someone pays a registrar, so that the payer can configure
>>>> the names of DNS servers that hold DNS records for example1.com.
>>>>
>>>> Wietse
>>> Understand, I do have a registrar for my domains, but there I have
>>> always set ns1.{hoster}.com and ns2.{hoster}.com as the DNS servers.?
>>> (I've always used shared hosting in the past, but now am making my first
>>> hosting cloud instance)
>> In addition to the NS records that name these DNS servers, those
>> servers need to contain records for your domain. You can use the
>> 'dig' tool to verify that:
>>
>> dig ns example1.com. @8.8.8.8
>> dig mx example.com. @8.8.8.8
>>
>> and so on. This uses Google DNS to show what a remote client would get.
>>
>> Wietse
> Yes this works. But all my questions have disappeared.Sending an email from a remote machine pretends like it goes out just fine. But it never arrives in the server's mail folder. Zero goes into maillog, even with systemctl restart postfix. TLS is not enabled. # systemctl status postfix ● postfix.service - Postfix Mail Transport Agent Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2017-10-25 11:50:18 PDT; 1min 34s ago Process: 6944 ExecStop=/usr/sbin/postfix stop (code=exited, status=0/SUCCESS) Process: 6964 ExecStart=/usr/sbin/postfix start (code=exited, status=0/SUCCESS) Process: 6960 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS) Process: 6956 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=0/SUCCESS) Main PID: 7037 (master) CGroup: /system.slice/postfix.service ├─7037 /usr/libexec/postfix/master -w ├─7038 pickup -l -t unix -u └─7039 qmgr -l -t unix -u Oct 25 11:50:18 quantum.localdomain systemd[1]: Starting Postfix Mail Transport Agent... Oct 25 11:50:18 quantum.localdomain postfix/master[7037]: daemon started -- version 2.10.1, configuration /etc/postfix Oct 25 11:50:18 quantum.localdomain systemd[1]: Started Postfix Mail Transport Agent. # listen |grep master master 7037 root 13u IPv4 351967 0t0 TCP *:25 (LISTEN) master 7037 root 14u IPv6 351968 0t0 TCP *:25 (LISTEN) # dig ns delphi-real-estate.com. @88.191.249.135 ; <<>> DiG 9.9.4-RedHat-9.9.4-50.el7_3.1 <<>> ns delphi-real-estate.com. @88.191.249.135 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35740 ;; flags: qr aa rd; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;delphi-real-estate.com. IN NS ;; ANSWER SECTION: delphi-real-estate.com. 28800 IN NS nsa.bookmyname.com. delphi-real-estate.com. 28800 IN NS nsc.bookmyname.com. delphi-real-estate.com. 28800 IN NS nsb.bookmyname.com. ;; Query time: 407 msec ;; SERVER: 88.191.249.135#53(88.191.249.135) ;; WHEN: Wed Oct 25 11:10:23 PDT 2017 ;; MSG SIZE rcvd: 116 # dig mx delphi-real-estate.com. @88.191.249.135 ; <<>> DiG 9.9.4-RedHat-9.9.4-50.el7_3.1 <<>> mx delphi-real-estate.com. @88.191.249.135 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31336 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;delphi-real-estate.com. IN MX ;; ANSWER SECTION: delphi-real-estate.com. 28800 IN MX 10 mail.delphi-real-estate.com. ;; Query time: 198 msec ;; SERVER: 88.191.249.135#53(88.191.249.135) ;; WHEN: Wed Oct 25 11:06:16 PDT 2017 ;; MSG SIZE rcvd: 72
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