Linux mail doesn't go out to local users

[perfectly_dark]

I'm using Postfix on a Linux computer and it routes all outgoing email to a Microsoft Exchange server on the network. It all works fine except that users on the local domain have external email accounts. EG: dave@tb.tb.com is the local email, dave@techbasement.com is the external email that you'd type into an email client. The problem is, I can't seem to send messages to dave@techbasement.com, the only way I can is using dave@tb.tb.com but that's not a good option because I'm using this for bugzilla and user names use external emails. Does any one know why my emails aren't going out to the external addresses? Thanks in advance.

[perfectly_dark]

well, how about if any emails with the domain techbasement.com were just changed to ts.ts.com? Does any one know how to do that or what it is called so I can google it?

[DumbMud]

Originally posted by perfectly_dark
I'm using Postfix on a Linux computer and it routes all outgoing email to a Microsoft Exchange server on the network. It all works fine except that users on the local domain have external email accounts. EG: dave@tb.tb.com is the local email, dave@techbasement.com is the external email that you'd type into an email client. The problem is, I can't seem to send messages to dave@techbasement.com, the only way I can is using dave@tb.tb.com but that's not a good option because I'm using this for bugzilla and user names use external emails. Does any one know why my emails aren't going out to the external addresses? Thanks in advance.

Not sure if this would help.

You need to specifify the names of hosts and domains in /etc/mail/relay-domains. In your scenario it should look something like:

tb.tb.com
techbasement.com

You can also use IP address in form of a network address or a full IP.

If possible please let me know how it goes. :)

[perfectly_dark]

Should I create the file because it does not exist?

[DumbMud]

Yes you should.

[perfectly_dark]

Should I restart Postfix once the file is created?

[DumbMud]

Originally posted by perfectly_dark
Should I restart Postfix once the file is created?

Sorry I don't think that approach could help at all as you are not running a virtual host of techbasement.com but it is an external mail service. Um...I am not sure...:(