1 Topic by selea

  • selea
  • selea
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Topic: Outgoing backup MX

Hi.
I just installed iRedmail on a new server, and would like to explore the possibility to route emails over a backup-outgoing server if the delivery fails from the local server for some reason.

Is that possible?

I checked this article, but it does not look like what I am looking for:
https://docs.iredmail.org/backupmx.html

Thankful for any answers smile

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Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.

2 Reply by ZhangHuangbin

  • ZhangHuangbin
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Re: Outgoing backup MX

Use Postfix "fallback_relay".
FYI: https://www.postfix.org/postconf.5.html#fallback_relay

3 Reply by selea

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Re: Outgoing backup MX

Hi!
Thanks! I have checked that, but I am not sure how it works even thou I have tested it multiple times on other postfix installations.

The thing is, that iRedmail queries the database in order to fetch the transport maps for each user/domain - which is what I have done.

I wonder, if it is possible to create a "backup_transport_map" or some kind of "round robin" setup by query the database?
If I create multiple rows with the same email for example - how will postfix react then?

4 Reply by ZhangHuangbin

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Re: Outgoing backup MX

Please read the document, it explains how it works:
https://www.postfix.org/postconf.5.html … back_relay