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 "...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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/...
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 ...
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