Hello,
PROBLEM
Postfix is not resolving rDNS... -> (unknown
See below the headers of an email.
However I can see that in journalctl -f, it translates some IP to name.
If I turn chroot for smtps ON, it stops translating in journalctl, and all the connections appear as unknown.
The problem is with received emails. All of them have (unknown before the IP address, no matter if smtpd has chroot on or off.
here is a header of an email sent from a website contact form IP 94.177.253.49.
The mail server is at IP 185.43.211.43.
Both of them have a rDNS assigned. (please don't post here the DNS name assigned to 94.177.253.49 for privacy reason, because it has name, and I want to avoid google to crawl and index it).
Chroot is OFF
Code:
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (yes) (never) (100)
# ==========================================================================
smtp inet n - n - - smtpd
submission inet n - - - - smtpd
-o smtpd_tls_security_level=encrypt
-o smtpd_client_restrictions=permit_sasl_authenticated,reject
pickup fifo n - - 60 1 pickup
cleanup unix n - - - 0 cleanup
qmgr fifo n - n 300 1 qmgr
tlsmgr unix - - - 1000? 1 tlsmgr
rewrite unix - - - - - trivial-rewrite
bounce unix - - - - 0 bounce
defer unix - - - - 0 bounce
trace unix - - - - 0 bounce
verify unix - - - - 1 verify
flush unix n - - 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - - - - smtp
relay unix - - - - - smtp
-o smtp_fallback_relay=
showq unix n - - - - showq
error unix - - - - - error
retry unix - - - - - error
discard unix - - - - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - - - - lmtp
anvil unix - - - - 1 anvil
scache unix - - - - 1 scache
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
dovecot unix - n n - - pipe flags=DRhu user=vmail:vmail argv=/usr/bin/spamc -4 -u vmail -e /usr/libexec/dovecot/deliver -d ${recipient} -f ${sender}
policy-spf unix - n n - - spawn user=nobody argv=/usr/libexec/postfix/policyd-spf
And this is part of a header of an email sent from the website contact form to the email:
Code:
Delivered-To: xxx@glmr.in
Received: by mail.glmr.in (Postfix, from userid 994)
id 4CDBC1373; Thu, 4 Oct 2018 09:37:52 +0200 (CEST)
Delivered-To: xxx@tantramassageamsterdam.net
Received: from www.tantramassageamsterdam.net (unknown [94.177.253.49])
(Authenticated sender: xxx@tantramassageamsterdam.net)
by mail.glmr.in (Postfix) with ESMTPSA id DA19E428
for <xxx@tantramassageamsterdam.net>; Thu, 4 Oct 2018 09:37:31 +0200 (CEST)
Date: Thu, 4 Oct 2018 07:37:25 +0000
To: xxx@tantramassageamsterdam.net
From: 2342 <xxx@tantramassageamsterdam.net>
Reply-To: fsdfsa@sdfas.com
This is host from the mail server:
Code:
~]# host 94.177.253.49
49.253.177.94.in-addr.arpa domain name pointer se******o.com.
And here nslookup:
Code:
~]# nslookup 94.177.253.49
Server: 62.149.128.4
Address: 62.149.128.4#53
Non-authoritative answer:
49.253.177.94.in-addr.arpa name = se******o.com.
Authoritative answers can be found from:
And here some more info:
Code:
~]# postconf | grep dns
disable_dns_lookups = no
dnsblog_reply_delay = 0s
dnsblog_service_name = dnsblog
lmtp_dns_resolver_options =
lmtp_host_lookup = dns
postscreen_dnsbl_action = ignore
postscreen_dnsbl_reply_map =
postscreen_dnsbl_sites =
postscreen_dnsbl_threshold = 1
postscreen_dnsbl_ttl = 1h
smtp_dns_resolver_options =
smtp_host_lookup = dns
Does anybody know what's wrong or what else I can check?
