Have you also tested the sending domain? I'm partial to this being an RDNS-related issue.
-- Espi On Tue, Oct 7, 2014 at 5:06 PM, <[email protected]> wrote: > Receiving > > Sent from my BlackBerry 10 smartphone. > *From: *Micheal Espinola Jr > *Sent: *Tuesday, October 7, 2014 6:55 PM > *To: *exchange > *Reply To: *[email protected] > *Subject: *Re: [Exchange] 421 4.2.1 Unable to connect errors > > is animikisee.ca the sending or receiving domain? > > -- > Espi > > > On Tue, Oct 7, 2014 at 4:23 PM, Steve Ens <[email protected]> wrote: > >> Looks to be listed on the mailpolice sites. Never heard of those >> before. I turned off blacklisting on the animikisee.ca site >> altogether. Still same thing. >> >> On Tue, Oct 7, 2014 at 5:56 PM, Micheal Espinola Jr < >> [email protected]> wrote: >> >>> Do your tested results show anything different on this site? >>> >>> http://www.blacklistalert.org/ >>> >>> -- >>> Espi >>> >>> >>> On Tue, Oct 7, 2014 at 1:02 PM, Steve Ens <[email protected]> wrote: >>> >>>> Yes, already tried that. I can do a MX lookup, but cannot telnet to >>>> the server. Also getting this in the logs Error Code: 10061, Error >>>> Message: No connection could be made because the target machine actively >>>> refused it >>>> That seems to point to us being blacklisted, but I come up clean on the >>>> mxtoolbox tests. >>>> >>>> On Tue, Oct 7, 2014 at 2:48 PM, Kennedy, Jim < >>>> [email protected]> wrote: >>>> >>>>> What are the domains? Could be bad bounces from spam to non-existent >>>>> domains Your server can not contact them, so it tried alternates either >>>>> in >>>>> dns or per the RFC's (for example A record of domain.com) and that >>>>> failed. So it is still trying. >>>>> >>>>> >>>>> >>>>> Do an MX lookup from your transport server to verify your DNS is >>>>> working. Then try telnet port 25 from the transport server to that IP to >>>>> verify connectivity. What do you get? >>>>> >>>>> >>>>> >>>>> *From:* [email protected] [mailto: >>>>> [email protected]] *On Behalf Of *Steve Ens >>>>> *Sent:* Tuesday, October 7, 2014 3:42 PM >>>>> *To:* [email protected] >>>>> *Subject:* [Exchange] 421 4.2.1 Unable to connect errors >>>>> >>>>> >>>>> >>>>> Odd errors in my mail queue. Just started appearing yesterday. Most >>>>> mail gets sent, but from certain domains I get these errors. "Attempted >>>>> failover to alternate host, but that did not suceed." Anyone see this >>>>> before? Exchange 2010 on Windows 2008 R2. >>>>> >>>> >>>> >>> >> > >
