private Task <IWritable[]> CreateDispatchesAsync(
string mailId,
IEnumerable <string> recipients,
string sender,
CancellationToken token)
{
string senderDomain = MailUtilities.GetDomainFromMailbox(sender);
return(Task.WhenAll(
recipients
.GroupBy(MailUtilities.GetDomainFromMailbox)
.SelectMany(
g =>
{
if (_settings.Value.DomainName == g.Key)
{
_log.Information($"{mailId} is local mail found");
return g.Select(r => _delivery.NewMailAsync(mailId, r, token).Cast <IMailboxItemWriteReference, IWritable>());
}
if (_settings.Value.RelayDomains.Any(d => string.Equals(d.Name, g.Key, StringComparison.OrdinalIgnoreCase)) ||
_settings.Value.DomainName == senderDomain)
{
_log.Information($"{mailId} is related to {g.Key}");
return _transfer.NewMailAsync(mailId, sender, g.ToImmutableList(), token)
.Cast <IMailWriteReference, IWritable>()
.ToEnumerable();
}
_log.Error($"Invalid domain {g.Key}");
return Enumerable.Empty <Task <IWritable> >();
}
)
));
}
public static Task <IMailboxItemWriteReference> NewMailAsync(
this IMailboxDeliveryStore store,
string id,
string mailbox,
CancellationToken token)
{
return(store.NewMailAsync(id, mailbox, "inbox", token));
}