The default pseudonym creation:
- concatenates 'FirstName', " " (space), and 'LastName'
- strips leading and trailing spaces
- replaces multiple spaces with single spaces
- replaces the remaining spaces with dots
- converts the result to lower case
- creates an alternative where the dots have been replaced by underscores
'julius' is (presumably) the account's username value - but may not be either FirstName or LastName.
For example, my *account* is "mmccarn", my *FirstName* is "Michael J" and my *LastName* is "McCarn". This makes my pseudonyms "michael.j.mccarn@..." and "michael_j_mccarn@..."
Check the settings for the account 'julius'. Verify that 'FirstName', 'LastName' are set as you expect.
db accounts show julius
Check that your SME has the usual pseudonym (alias) entries in the accounts db (if these have been deleted at some point they may not be automatically recreated):
db accounts print |grep pseudonym.*julius
If everything above looks right, check the actual configuration files generated by the db settings.
For the server to think the pseudonym is local it needs to exist in /var/service/qpsmtpd/config/goodrcptto (note that if FirstName or LastName dos not contain 'julius' the output from this command may be empty):
grep julius /var/service/qpsmtpd/config/goodrcptto
Once the server has accepted the email, qmail needs to know who to deliver it to. This is controlled by /var/qmail/users/assign:
grep julius /var/qmail/users/assign