Random aliases are used within notification that an email is too large

[cautopartes]

Used Zammad Version

5.4.0

Environment

• Installation method: any
• Operating system: any
• Database + version: any
• Elasticsearch version: any
• Browser + version: any

Actual behaviour

• Upon sending an email that is too big, I get a corresponding notification by "postmaster" that the email is not being processed because of the size.
• If multiple aliases are configured for the corresponding email account, the postmaster notification comes randomly from one of these alias addresses.

Expected behaviour

• Upon sending an email that is too big, I get a corresponding notification by "postmaster" that the email is not being processed because of the size.
• This (template based) notification should originate from the email address I was writing to.
• Aliases should have no influence on this.

Steps to reproduce the behaviour

• Add several aliases to an email account.
• Send an email that exceeds the permitted size/attachment limit to the main address.
• Check the sender/from address of the corresponding postmaster notification.
• If you delete the alias that answered, another one from the list is picked at random.

Support Ticket

Ticket#10123838

I'm sure this is a bug and no feature request or a general question.

yes

[martini]

This (template based) notification should originate from the email address I was writing to.

Just a technical note. IMO its a edge case. However the technical position if we want to change it is here https://github.com/zammad/zammad/blob/develop/app/models/channel/email_parser.rb#L936