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I'm currently using Google Apps to forward mails addressed to recipients at my domain balkan-preferans.de (176.9.40.169) to my address First.Last@gmail.com - this is done by the following DNS-zone served by my hoster:

$TTL 86400
@   IN SOA ns1.first-ns.de. postmaster.robot.first-ns.de. (
    2012100402   ; serial
    14400        ; refresh
    1800         ; retry
    604800       ; expire
    86400 )      ; minimum

@                        IN NS      robotns3.second-ns.com.
@                        IN NS      robotns2.second-ns.de.
@                        IN NS      ns1.first-ns.de.

@                        IN A       176.9.40.169
localhost                IN A       127.0.0.1
www                      IN A       176.9.40.169
@                        IN MX 1    ASPMX.L.GOOGLE.COM.
@                        IN MX 5    ALT1.ASPMX.L.GOOGLE.COM.
@                        IN MX 5    ALT2.ASPMX.L.GOOGLE.COM.
@                        IN MX 10   ASPMX3.GOOGLEMAIL.COM.
@                        IN MX 10   ASPMX2.GOOGLEMAIL.COM.

This has worked well for the past year, but I'd like to get rid of Google Apps, because they aren't free of cost anymore and I don't use any other features of that product.

So I'd like to change the MX-records above to point to my 2 web servers - which run 24/7 anyway.

On the servers with CentOS 6 Linux I currently run sendmail (for sending logwatch mails mainly).

Could anybody please provide some hints on which macros to add to /etc/mail/sendmail.mc so that all mail for the balkan-preferans.de is accepted and then relayed to my address First.Last@gmail.com?

Do I have to open an incoming port in iptables firewall too?

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1 Answer 1

up vote 2 down vote accepted

I don't think you need to mess with sendmail.mc - just add

@balkan-preferans.de first.last@gmail.com

to the /etc/mail/virtusertable and you should be good to go.

This assumes sendmail is set up to correctly receive mail for that domain, which I'm further assuming you've ensured already.

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Ok I get it - this will "rewrite" the recipients. But I actually haven't set up anything yet to receive mail for that domain (besides MX records) - where should I do it, in sendmail.mc? –  Alexander Farber Dec 21 '12 at 15:45
1  
Add the names of the "servers" you set the MX records to to /etc/sendmail/local-host-names. You may need to remove the loopback address from the active DAEMON_OPTIONS line in sendmail.mc. –  John Dec 21 '12 at 15:51
    
Thank you and the incoming port to open in iptables is 25? And how do I test delivery/acceptance, by connecting telnet balkan-preferans.de 25? And why remove the loopback adress, I currently have DAEMON_OPTIONS(Port=smtp,Addr=127.0.0.1, Name=MTA')` there. –  Alexander Farber Dec 21 '12 at 15:59
1  
I usually test delivery by just sendmail an email, I'm too lazy to type everything out in a telnet session. But yes, that should let you test. –  John Dec 21 '12 at 16:01
    
You have to remove the Addr=127.0.0.1 part from sendmail.mc, regenerate sendmail.cf and restart sendmail. –  adamo Dec 22 '12 at 21:04
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