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Continuing further, as my previous reply you only try the
secondaries in the event of a temporary error. A timeout includes a
temporary error, but a failure to resolve<u><b><i> does not </i></b></u>:<br>
<br>
<pre class="newpage"> The lookup first attempts to locate an MX record associated with the
name. If a CNAME record is found, the resulting name is processed as
if it were the initial name. If a non-existent domain error is
returned, this situation MUST be reported as an error. If a
temporary error is returned, the message MUST be queued and retried
later (see <a href="http://tools.ietf.org/html/rfc5321#section-4.5.4.1">Section 4.5.4.1</a>). If an empty list of MXs is returned,
the address is treated as if it was associated with an implicit MX
RR, with a preference of 0, pointing to that host. </pre>
<br>
<div class="moz-cite-prefix">On 02/09/2014 16:33, Rick Cooper wrote:<br>
</div>
<blockquote cite="mid:8C5E49AEED12468F8399DD7A0BDC305D@SAHOMELT"
type="cite">
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<div dir="ltr" align="left"><span class="752432915-02092014"><font
color="#0000ff" face="Arial" size="2">rfc5321 does not say
that, as I read it. It says:</font></span></div>
<div dir="ltr" align="left"><span class="752432915-02092014"></span> </div>
<div dir="ltr" align="left"><span class="752432915-02092014">
<pre class="newpage" style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1em; FONT-VARIANT: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; PAGE-BREAK-BEFORE: always; FONT-WEIGHT: normal; COLOR: rgb(0,0,0); FONT-STYLE: normal; MARGIN-TOP: 0px; LETTER-SPACING: normal; LINE-HEIGHT: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"><font face="Arial" size="2">The lookup first attempts to locate an MX record associated with the
name. If a CNAME record is found, the resulting name is processed as
if it were the initial name. If a non-existent domain error is
returned, this situation MUST be reported as an error.</font></pre>
<pre class="newpage" style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1em; FONT-VARIANT: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; PAGE-BREAK-BEFORE: always; FONT-WEIGHT: normal; COLOR: rgb(0,0,0); FONT-STYLE: normal; MARGIN-TOP: 0px; LETTER-SPACING: normal; LINE-HEIGHT: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"> </pre>
<pre class="newpage" style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1em; FONT-VARIANT: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; PAGE-BREAK-BEFORE: always; FONT-WEIGHT: normal; COLOR: rgb(0,0,0); FONT-STYLE: normal; MARGIN-TOP: 0px; LETTER-SPACING: normal; LINE-HEIGHT: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"><font color="#0000ff" face="Arial" size="2">You cannot report as error and continue on with delivery, this doesn't mean log an error it means</font></pre>
<pre class="newpage" style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1em; FONT-VARIANT: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; PAGE-BREAK-BEFORE: always; FONT-WEIGHT: normal; COLOR: rgb(0,0,0); FONT-STYLE: normal; MARGIN-TOP: 0px; LETTER-SPACING: normal; LINE-HEIGHT: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"><font color="#0000ff" face="Arial" size="2">cease and report as error ( not even defer). Assuming this is what you are speaking of the correct</font></pre>
<pre class="newpage" style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1em; FONT-VARIANT: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; PAGE-BREAK-BEFORE: always; FONT-WEIGHT: normal; COLOR: rgb(0,0,0); FONT-STYLE: normal; MARGIN-TOP: 0px; LETTER-SPACING: normal; LINE-HEIGHT: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"><font color="#0000ff" face="Arial" size="2">thing to do would be to try the primary and (assuming it returned a cname) stop the delivery attempt</font></pre>
<pre class="newpage" style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1em; FONT-VARIANT: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; PAGE-BREAK-BEFORE: always; FONT-WEIGHT: normal; COLOR: rgb(0,0,0); FONT-STYLE: normal; MARGIN-TOP: 0px; LETTER-SPACING: normal; LINE-HEIGHT: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px"><font color="#0000ff" face="Arial" size="2">when it cannot be resolved.</font></pre>
</span></div>
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<div class="OutlookMessageHeader" dir="ltr" align="left"
lang="en-us">
<hr tabindex="-1">
<font face="Tahoma" size="2"><b>From:</b>
<a class="moz-txt-link-abbreviated" href="mailto:mailscanner-bounces@lists.mailscanner.info">mailscanner-bounces@lists.mailscanner.info</a>
[<a class="moz-txt-link-freetext" href="mailto:mailscanner-bounces@lists.mailscanner.info">mailto:mailscanner-bounces@lists.mailscanner.info</a>] <b>On
Behalf Of </b>Joolee<br>
<b>Sent:</b> Tuesday, September 02, 2014 10:37 AM<br>
<b>To:</b> MailScanner discussion<br>
<b>Subject:</b> Re: ot a bit: sendmail and TO mx not found<br>
</font><br>
</div>
<div dir="ltr">rfc5321 section 5 indicates that Sendmail <i>should</i>
try the server(s) to whom the alternative MX records point. It
shouldn't try all multihomed A records pointed to by a single MX
record (although, that's not exactly what the RFC says) but
that's not the case here. So the question still is, why doesn't
Sendmail try the alternative MX records?<br>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On 2 September 2014 14:39, Peter
Farrow <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:peter@farrows.org" target="_blank">peter@farrows.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex;
MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div text="#000000" bgcolor="#FFFFFF">If the primary MX
does not resolve , sendmail will not try a lesser MX
record, because the best option is unresolvable, so it
will return the message after checking and appending any
search parameters given in /etc/resolv.conf.<br>
<br>
This behaviour is by design, and you are trying to fix a
problem which is inherently not yours to solve.<br>
<br>
If the primary MX does not resolve : The domain is
broken - so why try and work around that?
<div>
<div class="h5"><br>
<br>
<br>
<br>
<br>
<br>
<div>On 02/09/2014 13:19, <a moz-do-not-send="true"
href="mailto:ja@conviator.com" target="_blank">ja@conviator.com</a>
wrote:<br>
</div>
</div>
</div>
<blockquote type="cite">
<div>
<div class="h5">
<div>hi</div>
<div> </div>
<div>its a bit OT but I hope its OK anyway. We are
also using Mailscanner as outbound scanner and
see a problem that I cannot figure out -
probably some setting im missing. </div>
<div> </div>
<div>sometimes "we" send emails to a domain where
the primary MX record does not resolve. I would
have expected that sendmail would just try the
next but instead it resolves to <a
moz-do-not-send="true"
href="http://mxrecord.name.OURDOMAIN.COM"
target="_blank">mxrecord.name.OURDOMAIN.COM</a>
(I think) - it seams it appends our domain and
then tries this server and this server says "no
thanks" so the delivery fails. </div>
<div> </div>
<div>I tried to lookup the MX myself using the
same nameserver as the mailscanner server is
using - this fails so its not the DNS server
that appends something to make it resolveable or
gives out a standard IP. </div>
<div> </div>
<div>I also checked the resolve file to check that
there is not search setting that would make it
search our domain for a valid IP/lookup. </div>
<div> </div>
<div>how can I stop this behavior and make it try
the next MX in line? </div>
<div> </div>
<div>best regards</div>
<div>Jan</div>
<div> </div>
<br>
</div>
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