since there are few issues with antispam for POP3, I suggest to skip this feature. The following is a guideline for the Last Astaro release 5.011:
A) Under Proxies: Enable SMTP Proxy
-> Under Incoming mail Section add the domains for which you want to relay and where to deliver the mail, Domains not contained here, will be refused.
-> Enable "recipient verification" so that email will be accepted only for valid existing users. (if this is not checked ASL will not check if a user exists and will accept all messages that will then appear, undelivered, under the proxy content manager menu)
-> Under Outgoing Mail section add your INTERNAL Network if you want the people to be able to relay
-> Leave Sender Address Verification disabled, because Sometimes you will receive emails from unexisting users (like online shops or mailing list, the reply address doesn't exists)
-> Enable Realtime blackhole list (Action Reject)
-> Enable spam Protection: I use the standard settings: 05 Quarantine / 08 reject
After this few steps don't forget to modify your MX record to point to your ASL box... if not done already.
since there are few issues with antispam for POP3, I suggest to skip this feature. The following is a guideline for the Last Astaro release 5.011:
A) Under Proxies: Enable SMTP Proxy
-> Under Incoming mail Section add the domains for which you want to relay and where to deliver the mail, Domains not contained here, will be refused.
-> Enable "recipient verification" so that email will be accepted only for valid existing users. (if this is not checked ASL will not check if a user exists and will accept all messages that will then appear, undelivered, under the proxy content manager menu)
-> Under Outgoing Mail section add your INTERNAL Network if you want the people to be able to relay
-> Leave Sender Address Verification disabled, because Sometimes you will receive emails from unexisting users (like online shops or mailing list, the reply address doesn't exists)
-> Enable Realtime blackhole list (Action Reject)
-> Enable spam Protection: I use the standard settings: 05 Quarantine / 08 reject
After this few steps don't forget to modify your MX record to point to your ASL box... if not done already.
