We use "Google Apps for Your Domain" for email, but wish to use our old email server for sending mail. The reason being that Google Apps SMTP is blacklisted by several of our partners as being spam(!!).
Google has detailed instructions on configuring this option, but I'm not 100% familiar with SPF and certainly not experienced with MailEnable at all. MailEnable seems to force you to specify individual IP ranges to allow instead of ranges, even though I followed the instructions for configuring SPF, and browsed their knowledgebase.
I've tried setting this up, but MailEnable isn't allowing google to relay mail:
Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 503 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server. (state 14).
Any MailEnable advice on how to proceed?