Sendmail SMART_HOST

Installing and Using OpenWrt
1

Hi,

I have installed sendmail (Busybox) ... and it works, but - I can't seem to find where to define the configuration ... for example, the relay host (SMART_HOST).

Any pointers?

Thanks!

2

SMTPHOST

Here in sources you can search for getenv function.
https://git.busybox.net/busybox/tree/mailutils/sendmail.c

There is also SMTP_ANTISPAM_DELAY but I don't know why the Greylisting antispam enabled for submission.

you may also add an option -S server[:port] Server
https://busybox.net/downloads/BusyBox.html#sendmail

note that the bb sendmail needs to be enabled on compilation. Use ssmtp instead

UPD I added a description on Wiki https://openwrt.org/docs/guide-user/services/email/smtp.client#using_busybox_sendmail

1 Like
3

That all makes sense, thanks! And I tried several of those :laughing:. The issue is that nut (UPS monitor) seems to be broken => on reset the script to be called to send email is reset, so it forces sendmail, with no command line options :frowning_face:. Otherwise, yes ... ssmtp makes sense.

Thanks again.

4

Doh! It seems like ssmtp has been removed in v22.03 (or earlier)?