Questions tagged [mail-delivery-agent]

To be used with questions related to Mail Delivery Agent also known as Message Delivery Agent and Local Delivery Agent.

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How does mail end up in /var/mail/<username>?

I've found plenty of information about where the mail comes from; typically cron scripts, but also things like apt-listchanges. I've found plenty of information about how to read the mail once it's ...
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Do two MDAs need their own MTAs?

Suppose I have an MDA in example1.com and an MTA in example2.com. Do I need an extra MTA on example1.com? MUA --- MDA --- MTA --- | Internet | --- MTA --- MDA --- MUA So far I used two MTAs.