cubicweb #3373620 allow to give STMP MAIL FROM address [validation pending]

currently, it systematically use a value specified in the configuration file.

This is annoying for cubes like the massmailing cube, as in such cases it should use the mail specified in the mailing so at least it's him who get the delivery error messages.

prioritynormal
typebug
done in3.18.0
load0.100
load left0.000
closed by#d773589b6d46 [mail] allow to specify SMTP's MAIL FROM address to config.sendmails(). Closes #3373620
patch[mail] allow to specify SMTP's MAIL FROM address to config.sendmails(). Closes #3373620 [applied]