Hi, BIG problem with incoming emails to the server, they simply don't get delivered. But, an email coming from another domain on the same server to the same email address does get delivered! For example: DomainA, DomainB are on the same Plesk and DomainC is on another server. When DomainC emails DomainA the emails never gets delivered [and no errors are generated.] However, if DomainB emails DomainA the emails is delivered straight away. Anyone have any ideas?