Hi, i’m having some difficulties with sending mail within virtualmin running on debian squeeze.
I have a server running several domains and subdomains, around 20 accounts in total. The hosting does not include any email accounts as I have an email server hosted somewhere else.
When I use php to send an email to any external domain e.g. a gmail account it works fine, mail gets delivered however I recently added a new domain and since adding it if I send mail to a domain that I host it gets stuck in the system, originally it was stuck in the Postfix queue however now it just disappears and is not delivered. I was getting error 550 in the queue.
I have tried everything from using and external SMTP server and I have MX records pointing to the mail server however I still have these issues, any help would be greatly appreciated as I’m a bit stuck with it.
I have tried the steps in the mail troubleshooting and everything I can find regarding external mail server and virtualmin on google.