Hi I am getting 421 4.3.0 error in sending email.

get-help
1

telnet 127.0.0.1 25
Trying 127.0.0.1…
Connected to 127.0.0.1.
Escape character is ‘^]’.
220 mail.xbesh.org KumoMTA
ehlo KumoMTA
250-mail.xbesh.org Aloha KumoMTA
250-PIPELINING
250-ENHANCEDSTATUSCODES
250 STARTTLS
MAIL FROM:mail@xbesh.org
250 OK EnvelopeAddress(“mail@xbesh.org”)
RCPT TO:milan2pals@gmail.com
250 OK EnvelopeAddress(“milan2pals@gmail.com”)
DATA
354 Send body; end with CRLF.CRLF
From:mail@xbesh.org
Subject: Test subject KumoMTA

This is test message KumoMTA

.
421 4.3.0 mail.xbesh.org technical difficulties
Connection closed by foreign host.

2

Hey there @forthcoming-yaffle, thanks for posting. Please read the “Troubleshooting” and “How to Ask for Help” buttons below. If you would like a 1:1 support session from the KumoMTA team, details are at the “Book a Support Session” button below.

Mike (Mike Hillyer) 3

:backhand_index_pointing_up:

4

@forthcoming-yaffle As Mike has pointed out, we need much more information in order to help you. please provide configs and logs as described in teh geting help docs above.

Simce this is.421 Temp fail, the first place I woudl look is your logs to see what the actual error is.

5

Thanks for your reply. I am sharing my config file and logs.
tsa_init.lua (554 Bytes)
sources.toml (489 Bytes)
shaping.toml (4.48 KB)
queues.toml (1.68 KB)
init.lua (7.04 KB)
dkim_data.toml (2.11 KB)
message.txt (7.87 KB)

6

It’s all there in your syslog entries. You refer to a vault in your DKIM config that isn’t there.

7

let me check

8

can you please share the path of the vault?

9

You are the one who would know that.

10

i am new to setup a mail server

11

i followed all steps as per the documentation

12

Comment out the vault part in dkim_data.toml. As per the comment, if those lines are present the MTA will try to use Vault.

13

ok

14

vault part commented but having same issue

15

also restarted all services

16

You will have a different syslog in that case.

17

new log is
message.txt (7.64 KB)

18

The last line in that log is your answer.