We have had several websites where the sales emails have not been received by the client or customer (configured in System -> Configuration -> Sales Emails).
We have no problems receiving any of them and often it's a matter of the store owner not getting the BCC/separate emails.
Does anybody have any recommendations with regards to server setup/changes in Magento to help with the reliability of sending emails?
We have looked at using AShroder's SMTP Pro module but before going down that road I'd be interested to hear opinions.