How to customize Exim HELO/EHLO without changing system hostname?

[sahsanu]

Hi,

@servtelecom

I have tried modifying the exim4.conf.template file to force a custom helo_data and smtp_active_hostname, but HestiaCP’s internal logic keeps reverting these changes or ignoring the custom configuration.

That should work. Did you take a look to this post?

Mail sent with the wrong domain

That’s a different “problem”. Is your server using the right hostname? Anyway, you can force Exim to use the hostname you want. First, backup exim conf just in case… Check what are the directives using lookup dnsdb to get the primary_hostname: grep '${lookup dnsdb{>: defer_never,ptr=$.*}{${listextract{1}{$value}}}{$primary_hostname}}' /etc/exim4/exim4.conf.template You should see 3 of them, one smtp_active_hostname and two helo_data. Search them in exim conf file /etc/exim4/exim4.conf.tem…