Sporadic "Unrouteable address" error message

albatroz

Well-Known Member
Mar 6, 2003
401
6
168
Virtual Orbis / Peru
cPanel Access Level
Root Administrator
Twitter
Several of my customers are reporting sporadic problems receiving email messages, so after running grep over the /var/log/exim_mainlog file, I found several lines like these:

2015-10-21 17:10:19 1Zp1Cc-0002RY-Hq ** [email protected]: Unrouteable address
2015-10-21 17:10:19 1Zp1Cc-0002RY-Hq ** [email protected]: Unrouteable address
2015-10-21 17:10:19 1Zp1Cc-0002RY-Hq ** [email protected]: Unrouteable address
2015-10-21 17:10:19 1Zp1aN-0006DO-50 ** [email protected]: Unrouteable address


The problem is that some of those email addresses really do exist.
So my question is, what is causing this issue?
 

dalem

Well-Known Member
PartnerNOC
Oct 24, 2003
2,983
159
368
SLC
cPanel Access Level
DataCenter Provider
1. your DNS resolvers on the sending are not set up or working correctly
2. The DNS on these domains are not set up or working correctly
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,884
2,254
463
Hello :)

Check to ensure you are using working resolvers in your /etc/resolv.conf file. Also, ensure the domain name is added to the /etc/localdomains file if it's email is handled by the local cPanel server.

Thank you.