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How is the from address set in postfix?
Postfix itself does not “set” the from address for an mail (as long has you haven’t really tweaked the postfix configuration). The from address header of an e-mail is set by the mail client which is asking postfix to deliver the mail (Postfix is a MTA ).
Can a postfix block mail from a sender?
They would get into my spam folder yes, but it still takes time to go through that folder. Eventually it did stop. For a few days, then it came back at about 200-400 messages a day. I asked on #postfix on FreeNode IRC about this.
How to reject mail based on from / sender?
This file defines the senders which I want to reject: Once I created those files, I ran this command to create the associate hash files: This will reject mail from those domains, sent to the address in question, with a status of 521. Why 521.
How to redirect an e-mail with a certain subject line?
Depending on your situation, it may be handy to redirect e-mails that have a certain subject line before it even reaches a user’s inbox. Let’s say you’re tired of getting e-mails that start with the word “Cialis”. Just follow these steps to redirect those e-mails.
Why does myorigin not show up in postfix?
In your case this seems to be user root. Try executing mail as a different user and you’ll see the from part changed. And since the command mail does – by default – not append the domain part to the “from” header of the mail it hands over to postfix, postfix is appending the myorigin part automatically to root.
What is the purpose of smtpd _ recipient _ restrictions in postfix?
The purpose of the smtpd_recipient_restrictions feature is to control how Postfix replies to the RCPT TO command. If the restriction list evaluates to REJECT or DEFER, the recipient address is rejected; no surprises here. If the result is PERMIT, then the recipient address is accepted.
Can a user send outoing email through postfix?
And the user is most likely on a dynamic IP address that other mail servers do not trust and reject. Such clients are meant to talk to their provider’s (your!) mail server, send login information to authenticate themselves and then send the email.
Why do I need aliases on my postfix site?
You can have users who have actual accounts on a system, or you can have users on virtual domains that don’t have a login but still receive mail. Or you might want aliases that include several users, so everybody on the “marketing” list gets mail or all folks in sales, legal or development can receive messages.
How can I add a user to my postfix?
However, if you don’t have a /etc/postfix/vmailbox file, odds are your system was configured to deliver to local accounts. You should check /etc/postfix/main.cf and look for the line mydestination. If it includes the domain you’re adding users for, then they’re being added as regular users. You should see some examples already.