Google Domains - how to send email to and from with same host

sidewinder

for example, if I my script is mailing from "[email protected]" to "[email protected]", sendmail will send the email directly to the local user (if that user exists) and DNS is never used to route the email to gmail - it stays local.

Any ideas? All the local email from within my domain either gets rejected bc the user doesn't exist or if the user does exist it never makes it to the google servers bc sendmail never tries to route the email to the google servers.

Hope I explained the problem correctly.

thanks in advance to VPS gurus here that I know have the answer to this question!

trewq

This is why you never set the host name of your server to a domain. It should always be a subdomain.

Easiest long term solution is to change your servers hostname.

sidewinder

So u think if I change the hostname of my server to xxx.mydomain.com that will fix it? I will try but I have my doubts.

Others have had this problem as well and appears easy to fix if u run plesk which I do not. Basically what I am trying to do is disable DNS Service for x domain in postfix or sendmail.

sidewinder

changed hostname to xxx.mydomain.com and same result. here is the topic on serverfault that addresses this situation. It seems like something a lot of people using google domains would encounter but my google-fu must suck or something bc I can't find an answer:

http://serverfault.com/questions/349108/postfix-force-server-to-send-mail-outside-of-localhost

hostnoob

@sidewinder said:
So u think if I change the hostname of my server to xxx.mydomain.com that will fix it? I will try but I have my doubts.

Others have had this problem as well and appears easy to fix if u run plesk which I do not. Basically what I am trying to do is disable DNS Service for x domain in postfix or sendmail.

no he means instead of having your hostname as domain.com you set it as vps1 or mailserver or something

trewq

@hostnoob said:
no he means instead of having your hostname as domain.com you set it as vps1 or mailserver or something

No, he changed it to the correct thing. It doesn't mean he changed it correctly though.

hostnoob

@trewq said:
No, he changed it to the correct thing. It doesn't mean he changed it correctly though.

Oh right, my bad then.

sidewinder

when changing hostname to mainvps: sendmail[22588]: My unqualified host name (main vps) unknown; sleeping for retry

when changing to clients.mydomain.com, mail is sent, but local email still sent to the local user...

https://stackoverflow.com/questions/22265721/postfix-local-smtp-ignoring-dns
https://stackoverflow.com/questions/1107730/cant-send-email-to-addresses-at-my-own-domain

ATHK

Just curious, why not use google SMTP servers instead of your own mail server?

redo

Just curious, what does it mean with "google domain" in the title?

trewq

@redo said:
Just curious, what does it mean with "google domain" in the title?

I'm guessing Google is being used as the domains mail server.

sidewinder

bad title, probably should of been "mail when using google apps"... here was my solution for anyone that cares using sendmail..

I added these 2 lines and rebuilt the .cf file, restarted sendmail and all was good
define(MAIL_HUB',mydomain.com.')dnl
define(LOCAL_RELAY',mydomain.com.')dnl

and works great. thanks for the help and hope if anyone else is having these problems this will help them too

RBH

Consider also adding valid SPF records.