Helo command rejected: Host not found

[pierrebtz]

Hello,

I have several emails coming back due to the HELO command being answered wrong see:

zmcontrol -v:
Release 8.7.0_GA_1659.RHEL7_64_20160628202714 RHEL7_64 FOSS edition.

hostname: z87.dominio.com.br
MX: mail.dominio.com.br

According to the manual I configured the correct Helo:

zmprov ms z87.dominio.com.br zimbraMtaSmtpdBanner mail.dominio.com.br
zmcontrol restart

Check configuration after command:
[zimbra@Z87 ~]$ zmprov gs z87.dominio.com.br | grep "SmtpdBanner"
zimbraMtaSmtpdBanner: mail.dominio.com.br

Testing with telnet:

# telnet mail.dominio.com.br 25
Trying 192.168.0.26...
Connected to mail.dominio.com.br.
Escape character is '^]'.
220 mail.dominio.com.br
EHLO mail.dominio.com.br
250-z87.dominio.com.br
250-PIPELINING
250-SIZE 20971520
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

Notice that when I connect it appears: 220 mail.domain.com that would be correct, but after the command EHLO returns 250-z87domain.com.

Has anyone set the HELO yet? Is there a step beyond what has been described?

Thanks.

[pierrebtz]

Hello guys,

I still have the problem. Would anyone have any tips?

Thank you.

[phoenix]

Do you actually have a reverse DNS that matches the smtpd banner?

[pierrebtz]

Thanks Phoenix,

It was missing the entry of z87 in dns.

Now it's working!