"Unrouteable Address" in Directadmin Exim log


Case 1 (Less)

Cause: DNS issue
Solution: Check /etc/resolv.conf for correct record. You can use the nameserver below:

nameserver 8.8.8.8
nameserver 4.2.2.2

Case 2 (Common)

Cause: An email account spamming and causing the email counter to reach limit. /etc/virtural/usage/<<user>>
Solution:
1) Check /var/log/exim/mainlog for spammer
2) Change that email account password
3) Reset counter. Replace <<user>> with directadmin username.

echo "" > /etc/virtual/usage/<<user>>