I’ve got quite a unique e-mail situation. Two domainnames run on the same server: domain1.com and domain2.com.
For domain1.com I’ve created e-mail forwarders who point to an existing e-mailaddress on domain2.com which is using Google Apps.
Domain1 uses local delivery for MX (to forward the e-mails) while domain2 doesn’t use local MX records because it’s running Google Apps.
When I send e-mails to domain1.com, it keeps failing. I’ve tried to add domain1.com as whitelist domain in the exim conf, but that didn’t work.