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Postfix all mails Reject - GreyList Off !

Posted: 03 May 2020 17:21
by TFNcap
Hi
I updated webmin (no problem)
then 260 yum update came (no problem)
Then he asked me to restart and
Now all posts are postfix reject

I was not using the gray list
I opened it but it doesn't leave greylist mails for hours

I want to close the gray list, but all incoming emails are postfix reject

i really need help

Re: Postfix all mails Reject - GreyList Off !

Posted: 03 May 2020 18:05
by smyers119
your going to need to add some CONTEXT and a whole lot more details for help.

Re: Postfix all mails Reject - GreyList Off !

Posted: 03 May 2020 18:10
by TFNcap

Code: Select all

Anonymous TLS connection established from unknown[209.85.221.45]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May  3 20:38:29 antispam postfix/smtpd[26620]: warning: 45.221.85.209.zen.spamhaus.org: RBL lookup error: Host or domain name not found. Name service error for name=45.221.85.209.zen.spamhaus.org type=A: Host not found, try again
May  3 20:38:29 antispam postfix/smtpd[26620]: NOQUEUE: reject: RCPT from unknown[209.85.221.45]: 450 4.1.8 <tsssscap@gmail.com>: Sender address rejected: Domain not found; from=<tsssscap@gmail.com> to=<support@tufhost.com> proto=ESMTP helo=<mail-wr1-f45.google.com>
I get the same error for every incoming email

Re: Postfix all mails Reject - GreyList Off !

Posted: 03 May 2020 18:11
by TFNcap
Graylist disable

Re: Postfix all mails Reject - GreyList Off !

Posted: 03 May 2020 18:19
by smyers119
TFNcap wrote: 03 May 2020 18:10

Code: Select all

Anonymous TLS connection established from unknown[209.85.221.45]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
May  3 20:38:29 antispam postfix/smtpd[26620]: warning: 45.221.85.209.zen.spamhaus.org: RBL lookup error: Host or domain name not found. Name service error for name=45.221.85.209.zen.spamhaus.org type=A: Host not found, try again
May  3 20:38:29 antispam postfix/smtpd[26620]: NOQUEUE: reject: RCPT from unknown[209.85.221.45]: 450 4.1.8 <tsssscap@gmail.com>: Sender address rejected: Domain not found; from=<tsssscap@gmail.com> to=<support@tufhost.com> proto=ESMTP helo=<mail-wr1-f45.google.com>
I get the same error for every incoming email
That error means you have some type of DNS or connectivity problem. can you ping 8.8.8.8? if so can you ping google.com?

Re: Postfix all mails Reject - GreyList Off !

Posted: 03 May 2020 18:25
by TFNcap

Code: Select all

[admin@antispam ~]$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=46 time=73.4 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=46 time=73.3 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=46 time=73.3 ms

but !!!

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[admin@antispam ~]$ ping google.com
ping: google.com: Name or service unknown

Re: Postfix all mails Reject - GreyList Off !

Posted: 03 May 2020 18:34
by smyers119
so there is something wrong with your unbound service.

Code: Select all

sudo systemctl status unbound
if thats running then check

Code: Select all

cat /etc/resolv.conf
and post contents

Re: Postfix all mails Reject - GreyList Off !

Posted: 03 May 2020 18:35
by TFNcap
your comment inspired me and the problem was solved

DNS settings deleted after updating webmin

webmin in dns review after review
I saw that the DNS line is empty
and I filled
solved

thanks for guiding me

God bless you :pray:

Re: Postfix all mails Reject - GreyList Off !

Posted: 07 May 2020 15:08
by jamerson
its seems you can ping ip but not fqdn
mostely is dns,

check if you have dns server installed/configured.
PS: make sure to disable ipv6