Am 2017-02-15 15:40, schrieb Heiko Schlittermann:
Hi,
Jakob Schürz <[email protected]> (Di 14 Feb 2017 16:11:45 CET):
Hi!
I'm running exim 4.88-5 from debian. And i have a problem.
…
But then i realized, the sender host ip is 127.0.0.1. So i thought,
the
sender has a misconfigured mail-system.
…
$sender_host_address is the address that contacted your system, it is
the IP address of the client, sending the message to your system, the
server.
Here... it is fetchmail and exim itself (bogofilter with bogotransport)
Feb 13 14:47:48 aldebaran exim[12477]: 2017-02-13 14:47:48
H=(aldebaran.localdomain) [127.0.0.1]
F=<[email protected]> rejected RCPT
<jakob@localhost>: SPF check failed.
Feb 13 14:47:48 aldebaran exim[12477]: 2017-02-13 14:47:48
H=(aldebaran.localdomain) [127.0.0.1]
F=<[email protected]> rejected RCPT
<jakob@localhost>: SPF check failed.
Feb 13 14:47:48 aldebaran fetchmail[850]: Nachricht
[email protected]@pop.gmx.net:10806 von 10884 wird gelesen (21436 Bytes)
(Log-Meldung unvollständig)
Feb 13 14:47:48 aldebaran fetchmail[850]: [200B blob data]
Feb 13 14:47:48 aldebaran exim[12477]: 2017-02-13 14:47:48
H=(aldebaran.localdomain) [127.0.0.1]
F=<[email protected]> rejected RCPT
<jakob@localhost>: SPF check failed.
Feb 13 14:47:48 aldebaran exim[12477]: 2017-02-13 14:47:48
H=(aldebaran.localdomain) [127.0.0.1]
F=<[email protected]> rejected RCPT
<jakob@localhost>: SPF check failed.
Feb 13 14:47:48 aldebaran fetchmail[850]: kann noch nicht einmal an
user senden!
Feb 13 14:47:48 aldebaran fetchmail[850]: nicht gelöscht
Huh. Exim is logging via syslog?
systemd-journald. I configured my unit to log to stdout, which leads to
journald :)
You can see, the sending host is my localhost. But in the email, the
sending_host_address is a valid host-ip from the sender. I can see it
in
the headers.
For the address of the sending host Exim solely relies on the network
connection, not on some headers.
Ok. I got this point. This happens only on Mails from Mailing-Lists,
Twitter- and Facebook-notifications ans Mails sent from my own account
to my own gmail- or gmx-address...
I tried a lot to see more about the handling. But i only found out,
that
exim4 sets $sender_host_address and $sender_host_name to 127.0.0.1 and
aldebaran.localdomain.
That's perfectly correct, isn't it?
I don't know... Messages sent from somewhere get rejected by missleading
spf-check, in case of checking against localhost, not the
original-sending-address.
I read, that this happens, when localhost delivers a message to exim
and
not an external host... but why does this happen only on a few
messages?
Do you have examples wher Exim doesn't set the $sender_host_address to
127.0.0.1?
I got a point on my research last night.
My exim runs on my laptop, which is behind a router with dynamic ip.
I configured a port-forwarding and a dynamic-dns for this.
Then i have own domain with a mailserver from my provider. I fetch mails
from this mailserver to my laptop periodically with fetchmail. The
spf-check fails on this point. And i found out, this must be in case of
failing SRS (Sender Rewriting Scheme ). Reverse-DNS for the ip of my
laptop is not correct in case of dynamic-dns.
I put a "domains = !+local_domains" in the acl for spf-check and added
my domain to MAIN_LOCAL_DOMAINS. Now this check is ok. But i don't know,
if other emails get checked... If this is a big problem?
Writing rules for exim is "a little" difficult. The syntax is strange...
i'm learning it very slowly...
regards
jakob
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