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Sam Bull's questions

Martin Hope
Sam Bull
Asked: 2021-03-10 14:38:17 +0800 CST
  • 0

I have 2 websites on the same server using the same version of WordPress. They both make calls to /wp-cron.php from the server itself. They are both managed by nginx and have very similar setups.

When I look at the access logs, I see the requests coming in to /wp-cron.php. But, for one website all the requests are logged as coming from 127.0.0.1, while the other website all the requests are logged as the external IP of the server.

What is the cause of this, and how can I make sure all such requests get logged as localhost?

nginx wordpress
Martin Hope
Sam Bull
Asked: 2019-08-13 10:47:31 +0800 CST
  • 1

I've set up DKIM on Exim with the domain set like:

DKIM_DOMAIN = ${sender_address_domain}

However, the domain is always set to the same domain (my primary domain), which causes DMARC validation to fail, because of alignment, when sending emails for other domains (I host several websites).

From reading the documentation, I think the sender_address_domain is the envelope address and not the From field. How can I change the envelope address so that it matches the From field of a given email (I assume this will also allow SPF alignment to be correct)?

Also, for security, is it possible to have a whitelist of allowable domains, so Exim refuses to send emails that have another domain in the From field?

exim
Martin Hope
Sam Bull
Asked: 2018-08-24 04:55:18 +0800 CST
  • 7

Today and yesterday, my server automatically rebooted and failed to bring up the network device during boot. If I reboot the machine again, then it starts up fine, I've also not encountered any issues with this during the past 2 months.

The only error logs I can find relating to this are:

Aug 23 06:37:14 server systemd[1]: Started ifup for ens16.
Aug 23 06:37:14 server systemd[1]: [email protected]: Main process exited, code=exited, status=1/FAILURE

and

Aug 23 06:37:14 server sh[281]: iptables-restore: line 10 failed
Aug 23 06:37:14 server systemd[1]: [email protected]: Main process exited, code=exited, status=1/FAILURE
Aug 23 06:37:14 server sh[281]: run-parts: /etc/network/if-pre-up.d/iptables exited with return code 1
Aug 23 06:37:14 server sh[281]: ifup: failed to bring up ens16

/etc/network/if-pre-up.d/iptables contains:

#!/bin/sh
/sbin/iptables-restore < /etc/iptables.up.rules

/etc/iptables.up.rules contains:

*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [896:90530]
-A INPUT -i lo -j ACCEPT
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p tcp --dport 80 -j ACCEPT
-A INPUT -p tcp --dport 443 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-port-unreachable
COMMIT

What could possibly be going wrong with this in an intermittent fashion, and how can I make sure it doesn't happen again?

linux