3 votes

SPF failing even though source IP is in the SPF record

The SPF "fail" under "policy_evaluated" in the DMARC report indicates a mismatch between the DMARC domain (from the "From" header) and the SPF domain (from the "...
Andreas's user avatar
  • 56
2 votes

Postfix sending duplicate emails under different userid's, how to fix?

Received: by localhost.localdomain message-id=<Aej4eFk4CtMsohU6wbxrlXigdloI53zuZDvecHneZ9Y@localhost> Your server appears unaware of its own name - but that is required for sending mail on the ...
anx's user avatar
  • 9,738
2 votes

Linux system mails alternative for sending and receiving besides SMTP

You can have a local mail system which sends all the locally generated mail to a configured smarthost, some remote mailer which is supposed to do all the hard work. You don't need a full-blown local ...
Nikita Kipriyanov's user avatar
2 votes

Adding SPF records when using both Google Workspace and SendGrid

This is not hard. Find the address of mail-ej1-f45.google.com (its 209.85.218.45) Lookup the TXT record for _spf.google.com: "v=spf1 include:_netblocks.google.com include:_netblocks2.google.com ...
symcbean's user avatar
  • 22.4k
1 vote
Accepted

AWS-SES sending from one site, from is another site - will DMARC help or hurt

This issue shouldn't be related to DMARC. It's likely that there's a problem with the emails you are sending. Gmail is generally more tolerant of malformed emails than Yahoo Mail and Outlook. For ...
Andreas's user avatar
  • 56
1 vote

postfix bounce_queue_lifetime and maximal_queue_lifetime

For what I understood by reading the postconf (https://www.postfix.org/postconf.5.html): --> maximal_queue_lifetime is the maximum lifetime for a "regular" mail. Hence, it is applied to ...
sqrt-1's user avatar
  • 37
1 vote
Accepted

Phishing email but with SPF, DKIM and DMARC in "PASS" status

This is impossible to analyze without the full headers. There could be many reasons for this. Some educated guesses can be made. As the message has passed the DKIM validation the source is likely ...
Esa Jokinen's user avatar
  • 49.7k
1 vote
Accepted

Postfix sending duplicate emails under different userid's, how to fix?

Okay, it turns out that the problem had nothing to do with postfix, but was happening due to duplicate cronjobs (which I was unaware of), a root cronjob and a user cronjob (created by the same user ...
jamminjames's user avatar
1 vote

Postfix sending duplicate emails under different userid's, how to fix?

Please check for local redirects in f.e. /etc/aliases Additionally there might be specific alias configuration in your main.cf which could result in this. Note that you might have not reloaded/...
Dennis Nolte's user avatar
  • 2,911
1 vote

Sending email with postfix on a specific IP address fails. Error 81126 with Gmail

Okay, I found the issue. Turns out that yes, a single ip address in smtp_bind_address and inet_interfaces field does indeed work. The problem was an incorrect iptables rule set by the wireguard ...
Oni's user avatar
  • 109

Only top scored, non community-wiki answers of a minimum length are eligible