http://www.zimbra.com/forums/installation/17754-solved-howto-change-postfix-helo.html

Default config .
220 mail.topvalueplaza.local ESMTP Postfix

smtp_helo_name = $myhostname

–Helo-
#>zmlocalconfig  -s  postfix_smtp_helo_name
postfix_smtp_helo_name = $myhostname

#>postconf smtp_helo_name
smtp_helo_name = $myhostname

–Banner–
#>zmlocalconfig  -s  postfix_smtpd_banner
postfix_smtpd_banner = $myhostname ESMTP $mail_name

#>postconf smtpd_banner
smtpd_banner = $myhostname ESMTP $mail_name

### Change To
– change banner.
zmlocalconfig -e postfix_smtpd_banner=”mail.topvalueplaza.com  ESMTP Postfix”
– change hello.
zmlocalconfig -e  postfix_smtp_helo_name=”mail.topvalueplaza.com”

– reload
zmmtactl  reload

check

# postfix_smtpd_banner
postfix_smtpd_banner = mail.topvalueplaza.com ESMTP Postfix

#>postconf smtpd_banner
smtpd_banner = mail.topvalueplaza.com ESMTP Postfix

#>zmlocalconfig  -s postfix_smtp_helo_name
postfix_smtp_helo_name = mail.topvalueplaza.com

#>postconf smtp_helo_name
smtp_helo_name = mail.topvalueplaza.com

 
 
 

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