Bug#917656: libnet-server-mail-perl: FTBFS (failing tests)

[Xavier]

Control: reassign -1 perl-modules-5.28
Control: severity -1 normal

Hi all,

it seems that Net::SMTP->new() fails randomly when launched during
Net::server::Mail tests: $s is sometimes undefined after this:

  my $s = Net::SMTP->new( $host, Port => $port, Hello => 'localhost' );

http://matrix.cpantesters.org/?dist=Net-Server-Mail+0.26 also shows that
this rarely happens since the release of 5.28.0 (1/22), never before.

I added a workaround for now in libnet-server-mail-perl tests (warn and
return when $s is undefined).

Cheers,
Xavier