NethServer and Exchange

[Andy_Wismer (André Wismer)]

Good point, for outgoing, however:

There IS a howto on this forum how to set the smtp helo on Postfix… (NethServer uses Postfix).
This so other mailservers see the name as valid from the outside - whatever it may be…
Usually mail.domain.tld…

Here:

Customizable Postfix SMTP banner host

The default SMTPD banner in Postfix is $hostname ESMTP $mail_name, which normally translates to something like <your_host_name> ESMTP Postfix. If the internal server name does not match the public DNS, the SMTP shows a hostname which may be incorrect, and make some email services reject messages or mark them as SPAM. It would be useful to have a way to override the default Postfix smtpd_banner configuration option. This can be done as easy as including a new template snippet named /etc/e-smit…