Problem receiving mail from Exim. For some reason, the check is looped in the logs?

Question

Exim

Set up receiving mail on the server.
When receiving a letter in the logs like this:

...


2016-10-27 23:20:50 1bzs6U-0003ap-3T <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=10089 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:50 1bzs6T-0003ac-T6 => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6U-0003ap-3T"
2016-10-27 23:20:50 1bzs6T-0003ac-T6 Completed
2016-10-27 23:20:50 1bzs6U-0003ay-92 DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:50 1bzs6U-0003ay-92 <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=10335 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:50 1bzs6U-0003ap-3T => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6U-0003ay-92"
2016-10-27 23:20:50 1bzs6U-0003ap-3T Completed
2016-10-27 23:20:50 1bzs6U-0003b3-Gv DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:50 1bzs6U-0003b3-Gv <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=10581 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:50 1bzs6U-0003ay-92 => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6U-0003b3-Gv"
2016-10-27 23:20:50 1bzs6U-0003ay-92 Completed
2016-10-27 23:20:50 1bzs6U-0003bC-MT DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:50 1bzs6U-0003bC-MT <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=10827 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:50 1bzs6U-0003b3-Gv => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6U-0003bC-MT"
2016-10-27 23:20:50 1bzs6U-0003b3-Gv Completed
2016-10-27 23:20:50 1bzs6U-0003bH-Rl DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:50 1bzs6U-0003bH-Rl <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=11073 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:50 1bzs6U-0003bC-MT => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6U-0003bH-Rl"
2016-10-27 23:20:50 1bzs6U-0003bC-MT Completed
2016-10-27 23:20:51 1bzs6V-0003bO-3i DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:51 1bzs6V-0003bO-3i <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=11319 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:51 1bzs6U-0003bH-Rl => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6V-0003bO-3i"
2016-10-27 23:20:51 1bzs6U-0003bH-Rl Completed
2016-10-27 23:20:51 1bzs6V-0003bV-9q DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:51 1bzs6V-0003bV-9q <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=11565 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:51 1bzs6V-0003bO-3i => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6V-0003bV-9q"
2016-10-27 23:20:51 1bzs6V-0003bO-3i Completed
2016-10-27 23:20:51 1bzs6V-0003be-Gh DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:51 1bzs6V-0003be-Gh <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=11811 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:51 1bzs6V-0003bV-9q => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6V-0003be-Gh"
2016-10-27 23:20:51 1bzs6V-0003bV-9q Completed
2016-10-27 23:20:51 1bzs6V-0003bj-MN DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:51 1bzs6V-0003bj-MN <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=12057 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:51 1bzs6V-0003be-Gh => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6V-0003bj-MN"
2016-10-27 23:20:51 1bzs6V-0003be-Gh Completed
2016-10-27 23:20:51 1bzs6V-0003bo-Rk DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:51 1bzs6V-0003bo-Rk <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=12303 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:51 1bzs6V-0003bj-MN => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6V-0003bo-Rk"
2016-10-27 23:20:51 1bzs6V-0003bj-MN Completed
2016-10-27 23:20:52 1bzs6W-0003bt-1j DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:52 1bzs6W-0003bt-1j <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=12549 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:52 1bzs6V-0003bo-Rk => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6W-0003bt-1j"
2016-10-27 23:20:52 1bzs6V-0003bo-Rk Completed
2016-10-27 23:20:52 1bzs6W-0003by-71 DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:52 1bzs6W-0003by-71 <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=12795 [email protected]l.com from <[email protected]> for [email protected]
2016-10-27 23:20:52 1bzs6W-0003bt-1j => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6W-0003by-71"
2016-10-27 23:20:52 1bzs6W-0003bt-1j Completed
2016-10-27 23:20:52 1bzs6W-0003c3-CY DKIM: d=gmail.com s=20120113 c=relaxed/relaxed a=rsa-sha256 [verification succeeded]
2016-10-27 23:20:52 1bzs6W-0003c3-CY <= [email protected] H=mydomain.net (domain.eu) [40.68.156.154] P=esmtps X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 S=13041 id=CAEqycp0YNP6j-w3CUcstc=s_Big50Ahf4fNTptHabjf[email protected] from <[email protected]> for [email protected]
2016-10-27 23:20:52 1bzs6W-0003c3-CY ** [email protected]: Too many "Received" headers - suspected mail loop
2016-10-27 23:20:52 1bzs6W-0003by-71 => [email protected] R=dnslookup T=remote_smtp H=mail.mydomain.net [40.68.156.154] X=TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128 DN="C=XX,ST=XX,L=XX,O=XX,OU=XX,CN=Proj,[email protected]" C="250 OK id=1bzs6W-0003c3-CY"
2016-10-27 23:20:52 1bzs6W-0003by-71 Completed
2016-10-27 23:20:52 1bzs6W-0003c7-F4 <= <> R=1bzs6W-0003c3-CY U=Debian-exim P=local S=13795 from <> for [email protected]
2016-10-27 23:20:52 1bzs6W-0003c3-CY Completed
2016-10-27 23:20:53 1bzs6W-0003c7-F4 => [email protected] R=dnslookup T=remote_smtp H=gmail-smtp-in.l.google.com [64.233.166.26] X=TLS1.2:RSA_AES_128_CBC_SHA1:128 DN="C=US,ST=California,L=Mountain View,O=Google Inc,CN=mx.google.com" C="250 2.0.0 OK 1477603253 r2si10998736wjf.60 - gsmtp"
2016-10-27 23:20:53 1bzs6W-0003c7-F4 Completed

Answer 1

Your delivery is stuck. The mail for local delivery is trying to be delivered via smtp.
In the dnslookup router, add an exception for local domains:
domains = ! +dummy_domains : ! +local_domains

Answer 2

mydomain.net:mydomain.net::nodesired domain