Hi I have some kind of problem recently since I have started to use MULTI_IP=yes regime inside Exim4U. Currently I am running Exim 4.80.1 and Exim4U v2.1.1 on Linux Gentoo x86_64. I've decided to configure exim4u using MULTI_IP environment (together with web pages modification related to assigning separate IP address (as well as rDNS records) to the each and every domain running inside that environment... If I decide to set MULTI_IP = NO and try to send E-mail from the Linux shell mail -s"test" abcdef(a)me.com (for example) the message goes out OK and with no problem... In case when MULTI_IP=YES there is kind of response inside exim_main.log. 2013-07-31 19:06:08 1V4Zqi-0004ua-3J <= root(a)xyz.com U=root P=local S=463 T="test2" 2013-07-31 19:06:08 1V4Zqi-0004ua-3J mx4.me.com.akadns.net [17.172.34.66] Cannot assign requested address 2013-07-31 19:06:08 1V4Zqi-0004ua-3J mx3.me.com.akadns.net [17.172.34.64] Cannot assign requested address 2013-07-31 19:06:08 1V4Zqi-0004ua-3J mx1.me.com.akadns.net [17.172.34.10] Cannot assign requested address 2013-07-31 19:06:08 1V4Zqi-0004ua-3J mx1.me.com.akadns.net [17.172.34.9] Cannot assign requested address 2013-07-31 19:06:08 1V4Zqi-0004ua-3J == abcdef(a)me.com R=dnslookup T=remote_smtp_multi_IP defer (99): Cannot assign requested address Also with exam -v -q command I am receiving something like: onnecting to mx6.me.com.akadns.net [17.172.34.70]:25 from AA.BB.CC.DD ... unable to bind outgoing SMTP call to AA.BB.CC.DD: Cannot assign requested addressfailed: Cannot assign requested address LOG: MAIN mx6.me.com.akadns.net [17.172.34.70] Cannot assign requested address Connecting to mx5.me.com.akadns.net [17.172.34.68]:25 from AA.BB.CC.DD ... unable to bind outgoing SMTP call to AA.BB.CC.DD Cannot assign requested addressfailed: Cannot assign requested address LOG: MAIN mx5.me.com.akadns.net [17.172.34.68] Cannot assign requested address LOG: MAIN == abcdef(a)me.com R=dnslookup T=remote_smtp_multi_IP defer (99): Cannot assign requested address where AA.BB.CC.DD is the DNS A record for the: www.mydomain.com IN A AA.BB.CC.DD mydomain.com IN A AA.BB.CC.DD Also I have notice when I do the user E-mail forward (using user_menu) to abcdef(a)me.com in case of the arrival of the E-mail to abcdef(a)mydomain.com the incoming email is frozen in similar way.. The strange behave is not happening for the each and every E-mail processed over MULTI_IP=YES but problems happened in less then 0,5% of the processed E-mails.. It looks like it is some kind of error inside exim4u software.. Anyone with some kind of idea? With best regards, Branislav Subotic