Bryan Arenal:
> I'm working on moving from PMTA over to Postfix and had a question on
> relaying for virtual domains. We send mail on customers' behalf and
> one of the things I'm trying to figure out is how to implement PMTA's
> "virtual-mta" in Postfix. This defines the destination host and
> credentials for the relaying. For example each of these would be
> their own respective config file:
Would the following help:
sender_dependent_relayhost_maps
per-sender relayhost via the default SMTP client
smtp_sender_dependent_authentication
per-sender SASL login information
And for really special cases:
sender_dependent_default_transport_maps
per-sender delivery agent and relay host,
allows custom SMTP client settings.
Each has some text at https://www.postfix.org/postconf.5.html#name-of-parameter
That's all Postfix has to offer.
Postfix does not virtualize delivery status notification messages.
If mail can't be delivered then the user will receive a message that
comes from the hostname in main.cf:mydestination, not from a virtual
MTA.
Wietse
> <virtual-mta smtp.office365.com-39-95002>
> <domain *>
> route smtp.office365.com:587
> auth-username "USERNAME"
> auth-password "PASSWORD"
> use-starttls yes
> </domain>
> </virtual-mta>
>
> <virtual-mta smtp.gmail.com-935-93737>
> <domain *>
> route smtp.gmail.com:587
> auth-username "USERNAME"
> auth-password "PASSWORD"
> use-starttls yes
> </domain>
> </virtual-mta>
>
> We have a lot of these; one per customer. Is this possible to do in Postfix?
>
> Thanks!
>
