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--- DOMAIN ---

Tested domain: example.com (changed name)
Info about owner: I own this domain
Info about mx DNS entry: mail is handled by google apps
example.com mail is handled by 10 ASPMX.L.GOOGLE.com.
example.com mail is handled by 20 ALT1.ASPMX.L.GOOGLE.com.
example.com mail is handled by 30 ALT2.ASPMX.L.GOOGLE.com.
example.com mail is handled by 40 ASPMX2.GOOGLEMAIL.com.

--- Mail setting ---

krogon@example.com - user of google apps
group@example.com - google group (not usenet)
alias group - user krogon@example.com as member, access to send emails anyone on the internet

--- Computer 1 ---

Operating System: Ubuntu
Network: inside NAT
Test 1: echo `date` | mail -s `hostname` krogon@example.com
Test 2: echo `date` | mail -s `hostname` group@example.com
Test 3: sending from thunderbird to group@example.com
Results: test 1 (OK), test 2 (no error, no mail), test 3 (OK)

--- Computer 2 ---

Operating System: Debian
Network: own public IP
Test 1: echo `date` | mail -s `hostname` krogon@example.com
Test 2: echo `date` | mail -s `hostname` group@example.com
Results: test 1 (OK), test 2 (OK)

--- Conclusion ---

Why sending an email from console from computer inside NAT to google group (alias) does not arrive? Using email client like Thunderbird or using computer with public IP works, so it does not look like ban for email address or source IP.

share|improve this question
    
Check you /var/log/mail.log on Ubuntu host –  AlexD Jul 18 '11 at 13:28
    
Nope, nothing there. Mail logging enabled. check at pastebin –  csgwro Jul 18 '11 at 13:47
    
If there is nothing in system mail.log then you should find where you mail server on Ubuntu writes its logs. –  AlexD Jul 18 '11 at 14:04
    
ok, found it at /var/log/exim4/mainlog but both mails ends successfully pastebin.com/Nwsqgq7J –  csgwro Jul 18 '11 at 14:28
    
Use of bogus domain in From address root@krogon-local could be cause of your problems. –  AlexD Jul 18 '11 at 15:39
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