I configured the Phabricator email according to this page: [[ https://secure.phabricator.com/book/phabricator/article/configuring_inbound_email/#configuring-phabricator | Configuring Inbound Email ]].
> If you don't want Phabricator to take up an entire domain (or subdomain) you can configure a general prefix so you can use a single mailbox to receive mail on. To make use of this set metamta.single-reply-handler-prefix to the prefix of your choice, and Phabricator will prepend this to the 'Reply-To' mail address. This works because everything up to the first (optional) '+' character in an email-address is considered the receiver, and everything after is essentially ignored.
Since I only get one email address for the server, I set the variables //metamta.single-reply-handler-prefix// and //metamta.reply-handler-domain// and now it is possible to reply to task as comments and use the [[ https://secure.phabricator.com/applications/mailcommands/PhabricatorManiphestApplication/task/ | email commands ]].
> You can also set up application email addresses to allow users to create application objects via email. For example, you could configure bugs@phabricator.example.com to create a Maniphest task out of any email which is sent to it. To do this, see application settings for a given application at
Can I use the same email address also for creating tasks by email? If so, how can I tell Phabricator to create tasks from this email?
If I now send an email to this email address, I get a reply from Phabricator that it cannot handle this email.
> Your email to Phabricator was not processed, because an error occurred while
> trying to handle it:
>
> Phabricator can not process this mail because no application knows how to
> handle it. Check that the address you sent it to is correct.
>
> (No concrete, enabled subclass of PhabricatorMailReceiver can accept this
> mail.)
Thank you for your help.