Hello everybody,
For a hotspot service I would like to setup a SMTP server. This SMTP server needs to handle all outgoing email traffic coming from the hotspot network. It doesn't need to handle incoming, because there are no mail accounts/domains on the server. What I want to do is setup server: smtp.domain.com and tell users that they need to use this server. A firewall will prevent all SMTP traffic from other networks than only the allowed hotspot networks. This will prevent the server to be an open relay server for the whole internet. The next step is to prevent users (that are allowed to use this SMTP server) from sending bulk mails, so I want to limit the number of mails they can send. For example, users (unique sender address) are allowed to send 10 messages within one hours. If there are more messages then the limit, it needs to bounce all message. I just want to have the same policy for all users so 10 messages for one sender address in one hour. My questions: 1. Is this possible? 2. How can I do this? 3. Do you have some other advices for me? Thank you in advance! Kind regards, Krijn Tanis
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