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Authenticated relay in MTA mode

AntonioPallua

Hi, I've configured XG SFOS v16 in MTA mode (mail server in DMZ).

It works except for authenticated relay:

I need to permit authenticated relay for users outside my office (imap/smtp form mobile device), pop3/imap works, smtp doesn't.

The mail client gives me the error 451 invalid HELO/EHLO or missing  RDNS when I try to send an email.

If i disable "Reject invalid HELO or missing RDNS" in the XG, then the error is: Authentication methods are not supported by the server (more or less, the error is in italian).

Can Anyone give me an hint?

 

Thank you

--Antonio



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  • 0 in reply to Aditya Patel

    Hi Patel thank you for the answer, but the link is about UTM, this is XG.

    The RDNS is Ok, I tested with various internet email checker; also email from internal server to internet and vice versa are ok.
    I have the problem only when I try to send emails with an email client outside the office (ie: iphone on on mobile network).

    Unfortunately I cannot find documentation on MTA feature.

    --Antonio

  • 0 in reply to AntonioPallua

    I would also like to implement this feature, at present I have my XG in legacy mode but would prefer to switch to MTA but relaying outside of my trusted network prevents this with MTA mode.  Any updates would be great.

     

    thanks