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3

In regard to question #1, it is something of a judgement call, but I'd probably create keys for all the domains being used in the From addresses, and sign emails with the appropriate DKIM key. This approach means that the From address and the DKIM authentication will be aligned. That makes it easy to turn on DMARC at some point in the future. As for ...


2

dropper: driver = accept condition = ${lookup{$local_part}lsearch{/path/drop.list}{yes}} transport = null_transport /path/drop.list : aaron amanda bob . . . . . Each time message for listed user arrives, it would be dropped. A large advantage of doing it this way is that the list is checked for each incoming email. ...


2

It depends on your exact exim config, but it boils down to adding an extra transport after the real_local transport, such as: virtual_local: driver = accept domains = +local_domains local_parts = lsearch;/etc/exim/virtual_users transport = virtual_maildir This will lookup the name in the given file, and if found use the named transport to ...


1

I would suggest a rewrite rule, these rules rewrite anything that's in the ".qp" TLD to point to the local host, the first two override the local part to just dump it to an alias the last one sends the rest to the same user on this machine. The .qp TLD is one of the "ISO 3166-1 alpha-2" country codes that is specifically allocated for local use. begin ...


1

Queued message are only held locally until the message has been successfully delivered. As the messages where successfully delivered to the smarthost, Exim should have purged the files from its queue. It is possible, but unlikely that some messages were not remove from the spool directory. The Exim log should include the Sender, Recipient(s), and Subject ...


1

The first step is to find where the configuration file is located. When you run exim -bV it will print out the configuration file it is using. You can also see the current (and possibly the default) for that setting by running exim -bP received_header_text. You must remember that the configuration file is likely strictly controlled by the DirectAdmin web ...


1

See also How to block IP addresses from port 25 Spambots are generally poorly configured. In particular rDNS validation fails. Most (unfortuneately not all) legitimate servers have rDSN correctly configured. This allows you to make life difficult for spambots by delaying responses for poorly configured servers. Exim allows you to do this fairly easily. ...



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