Custom HELO field, where?

NethServer Version: NethServer release 7.9.2009 (final)
Module: Mailserver

Where can i find the “Custom HELO” field that´s mentioned in the documentation?
I´ve been searching up an down in this installation and i can´t find it.

Hi @X86 and welcome back to the community… :wink:
Have a look here: Custom HELO Setting
I think it should give your answer…

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I had to use this last week and noticed there’s a small bug in here…

The document listed above implements the following (correctly):
This actually finds it’s way into the postfix config.
However: The correct value postfix needs is actually as follows:
myhostname =
So the add on in postfix as per above documentation will not work. :frowning:

From my notes, confirmed as working:

Custom Template addition for Postfix:

mkdir -d /etc/e-smith/templates-custom/etc/postfix/
cp /etc/e-smith/templates/etc/postfix/ /etc/e-smith/templates-custom/etc/postfix/
nano /etc/e-smith/templates-custom/etc/postfix/

Add in:
myhostname =

Save with CTRL-x y ENTER

expand-template /etc/postfix/
signal-event nethserver-mail-server-update
systemctl restart postfix
systemctl status postfix

Maybe the bug in the Cockpit should be corrected / confirmed…

My 2 cents

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The custom helo setting just changes smtp_helo_name in which may not be enough like in your case.

There’s an additional smtpd_banner setting explained here. This way it’s not necessary to change myhostname.

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Isn’t is possible to implement a small input field within the e-mail configuration to set a custom HELO?
Sincerely, Marko

ps.: without to have to install relay server

cp /etc/e-smith/templates/etc/postfix/ /etc/e-smith/templates-custom/etc/postfix/