All reports of default-mta-dependency-not-listed-first for the archive. The extended description of this tag is:
This package has a relationship with the mail-transport-agent or default-mta packages but does not specify the default-mta as an first option.
default-mta and mail-transport-agent should only ever be in a set of alternatives together, with default-mta listed in the primary position.
Please rearrange the dependencies such that default-mta is listed first.
This tag has not been emitted in any package tested by Lintian.