# How to determine SMTP setting from Exim?

**URL:** <https://meta.discourse.org/t/how-to-determine-smtp-setting-from-exim/53941>\
**Category:** Self-hosting\
**Created:** [7 Diciembre, 2016 22:24 UTC](https://meta.discourse.org/t/how-to-determine-smtp-setting-from-exim/53941 "2016-12-07T22:24:59Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Fran](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/fran/32/121415_2.png) [@Fran](https://meta.discourse.org/u/Fran)\
**Post date:** [8 Diciembre, 2016 00:48 UTC](https://meta.discourse.org/t/how-to-determine-smtp-setting-from-exim/53941/3 "2016-12-08T00:48:07Z")

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Thanks, elijah,

What _exactly_ do you mean by $container\_host\_fqdn, is that the Docker container’s fqdn, or something else? And where do I get that before or during install?

And, can I really get by with no username/password? I assumed that it needed that for sending email, is that wrong?

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