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digimetrica
digimetrica
New Member
September 5, 2014
Question

Using External Relay

  • September 5, 2014
  • 9 replies
  • 10413 views
Hello, I happly use Fortimail for several domains inside my network. I have a customer who needs to send bulk email (not spam of course) and I have to use an external relay (like Amazon SES). I can' t figure out how to do it: the customer is using 3 internal servers so i am able to identify the IPs. But I am stuck... it seems I can' t realy from a specified IP to am external relay server. The external relay option seems to be applied to the whole Fortmail, not the single server

    9 replies

    Bromont_FTNT
    Staff
    Bromont_FTNT
    Staff
    September 5, 2014
    Sending outbound mail to a relay server is a global setting (can' t be configured per domain) Mail Settings ---> Settings ---> Relay Server
    digimetrica
    digimetricaAuthor
    New Member
    September 5, 2014
    Yeah, that' s what I suspected... too bad :\
    emnoc
    emnoc
    New Member
    September 5, 2014
    Can the client just attach to the external mail relay and avoid the fortimail? Also you can allow the clients to send via the fortimail or something like this. http://docs-legacy.fortinet.com/fmail/5-1-1/admin/index.html#page/FortiMail_Online_Help/mail_settings_06_43.html
    digimetrica
    digimetricaAuthor
    New Member
    September 5, 2014
    there are 3 servers right now using Fortimail for relaying using php scripts. in order to allow them to relay locally or using directly an external relay i have to change the coding. Since now they are configured to send mails using fortimail i only needed to change one configuration (but it' s not possibile it seems)
    Istvan_Takacs_FTNT
    Staff
    Istvan_Takacs_FTNT
    Staff
    September 5, 2014
    Do they really need to be relayed via Fortimail? Why they just don' t directly be sent to the destination from the php app? Sounds like the function is already built-in, so they can generate emails and communicate to Fortimail via SMTP anyway. Sounds a bit overkill to chain the email delivery via multiple relay servers. If Amazon SES accepts bulk emails only from pre-defined sources than you can still NAT the connections to that external address on the FGT (or on any other basic firewalls)
    digimetrica
    digimetricaAuthor
    New Member
    September 8, 2014
    I wanted to route emails on the Fortmail for logging purposes: I don' t have full access to those servers. Amazon SES should use authentication. It doesn' t rely only on the IP address. Anyway I asked the developers to change their php codes :)
    Bromont_FTNT
    Staff
    Bromont_FTNT
    Staff
    September 8, 2014
    You could try the Fortimail in transparent mode, it will still scan and log smtp traffic but traffic will flow out to whatever relay server the sending MTA specified.
    digimetrica
    digimetricaAuthor
    New Member
    September 8, 2014
    Yep, in transparent mode you can do it without problems :) Sadly I can' t switch operating mode right now: too many domains configured on my FM.... it' s easier to go with php :)
    Uwe_Sommerfeld
    Uwe_Sommerfeld
    New Member
    September 9, 2014
    There are some additional routing features hidden in the advanced options config system global set mta-adv-ctrl-status enable end However I don' t see any sender-based relay host handoff for this. You could also give the content / antispam engine a try and use an outbound profile with an mx handoff action. However this might not be the best option.
    digimetrica
    digimetricaAuthor
    New Member
    September 9, 2014
    I see what i can do with these advanded options. Thank you :)
    lmsilvero
    lmsilvero
    New Member
    May 10, 2018

    Hi,

    Could you solve this? I have the same problem, I need to send to some domains through a specific relay configured on System ---> Mail Settings ---> Relay Host List.

    How can I use the mta-adv-ctrl-status to do that?

     

    Thank you.

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