My university offers an alumni email address. Unfortunately they only provide forwarding from said address.
For example I have the forwarding address `<removed>@alumni.ethz.ch`. There is no POP/IMAP or SMTP access. We can only define a forwarding address that all mail received at `<removed>@alumni.ethz.ch` gets forwarded to.
Now my question is: how can I send mail as `<removed>@alumni.ethz.ch`?
From my understanding I cannot actually send email from that address (no SMTP access), but I would not mind a solution similar to how many email services send email from `<something>@<service>.com on behalf of <removed>@alumni.ethz.ch`.
Now my question is how can I do that with Office 365 Exchange?