Rated 4 out of 5 stars

Add-on "SMTP control" provides an autoselect feature.

Léirmheas ar leagan níos sine den bhreiseán seo (1.1.0). 

Rated 4 out of 5 stars

I concur to the suggestion to auto select the available SMTP server. I reckon this could be based on learning (or asking the user to provide) associations between current IP domain and valid smtp server (no, ping won't work).
Pierre

Léirmheas ar leagan níos sine den bhreiseán seo (1.1.0).