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<p>Gmail is complaining because the From: field is empty, not
because of the null envelope from. What is removing the From:
address from the notification? The envelope from and the from
header are supposed to be independent.<br>
</p>
<p>"U=mailnull"</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 12/7/20 3:50 AM, Emanuel Vidmar -
Avant.Si wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CALZQ3pEKSu+y9rvr_KNws_pdP__Yr7nbTr67LkGGR72z8uGbAg@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div dir="ltr">
<div>I don't actually send it via Mail Control. It is sent
automatically in reply to emails containing virus or bad
attachments.</div>
<div>You say that null FROM is perfectly legitimate, but Gmail
obviously disagrees :)</div>
<div><br>
</div>
<div>This is an example of such message:</div>
<div><br>
</div>
<div>
<div>[root@~]# exigrep "1klynS-000AX0-TA"
/var/log/exim_mainlog</div>
<div>2020-12-06 19:30:11 cwd=/var/spool/exim/input 5 args:
/usr/sbin/exim -C /etc/exim_outgoing.conf -Mc
1klynS-000AX0-TA</div>
<div><br>
</div>
<div>2020-12-07 07:00:05
cwd=/usr/local/cpanel/whostmgr/docroot 6 args:
/usr/sbin/exim -C /etc/exim_outgoing.conf -v -Mrm
1klynS-000AX0-TA</div>
<div><br>
</div>
<div>2020-12-06 19:30:10 1klynS-000AX0-TA <= <>
U=mailnull P=MailScanner S=1131 T="{Opozorilo} Zlonamerno
e-postno sporocilo (virus)" for *****@<a
href="http://gmail.com" moz-do-not-send="true">gmail.com</a></div>
<div>2020-12-06 19:30:11 1klynS-000AX0-TA
check_mail_permissions could not determine the sender
domain [routed_domain=<a href="http://gmail.com"
moz-do-not-send="true">gmail.com</a>
message_exim_id=1klynS-000AX0-TA sender_host_address=
recipients_count=1]</div>
<div>2020-12-06 19:30:11 1klynS-000AX0-TA ** <a
href="mailto:izafasun@gmail.com" moz-do-not-send="true">izafasun@gmail.com</a>
R=dkim_lookuphost T=dkim_remote_smtp H=<a
href="http://gmail-smtp-in.l.google.com"
moz-do-not-send="true">gmail-smtp-in.l.google.com</a>
[74.125.206.26] X=TLS1.2:ECDHE-ECDSA-AES128-GCM-SHA256:128
CV=yes: SMTP error from remote mail server after end of
data: 550-5.7.1 [152.89.234.38 11] Our system has
detected that this message is\n550-5.7.1 not RFC 5322
compliant:\n550-5.7.1 'From' header is missing.\n550-5.7.1
To reduce the amount of spam sent to Gmail, this message
has been\n550-5.7.1 blocked. Please visit\n550-5.7.1 <a
href="https://support.google.com/mail/?p=RfcMessageNonCompliant\n550"
moz-do-not-send="true">https://support.google.com/mail/?p=RfcMessageNonCompliant\n550</a>
5.7.1 and review RFC 5322 specifications for more
information. g4si8507930wma.67 - gsmtp</div>
<div>2020-12-06 19:30:11 1klynS-000AX0-TA Frozen (delivery
error message)</div>
<div>2020-12-06 19:50:46 1klynS-000AX0-TA Message is frozen</div>
<div>2020-12-06 20:48:19 1klynS-000AX0-TA Message is frozen</div>
<div>2020-12-06 21:48:34 1klynS-000AX0-TA Message is frozen</div>
<div>2020-12-06 22:48:31 1klynS-000AX0-TA Message is frozen</div>
<div>2020-12-06 23:48:40 1klynS-000AX0-TA Message is frozen</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>--------------------------------</div>
<div><br>
</div>
<div>I was hoping there is some config that I could change to
fix that, since this is a pretty common setup (cpanel +
Configserver Mailscanner).</div>
<div><br>
</div>
<div>Thanks.</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div dir="ltr" class="gmail_signature">Regards,
<div><br>
</div>
<div>Emanuel</div>
<div>--------------------</div>
<div>Avant.si d.o.o.</div>
<div><span style="font-size:x-small"><a
href="http://www.avant.si" target="_blank"
moz-do-not-send="true"><font color="#FF6600">www.avant.si</font></a></span></div>
</div>
</div>
<br>
</div>
</div>
<div hspace="streak-pt-mark" style="max-height:1px"><img alt=""
style="width:0px;max-height:0px;overflow:hidden"
src="https://mailfoogae.appspot.com/t?sender=aZXZpZG1hckBnbWFpbC5jb20%3D&type=zerocontent&guid=149fc6d8-de17-467b-9efa-5bef18c8d1bd"
moz-do-not-send="true"><font size="1" color="#ffffff">ᐧ</font></div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">V V pon., 7. dec. 2020 ob
03:56 je oseba Mark Sapiro <<a
href="mailto:mark@msapiro.net" moz-do-not-send="true">mark@msapiro.net</a>>
napisala:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On
12/6/20 12:43 PM, Emanuel Vidmar - Avant.Si wrote:<br>
> Mark, thank you for your reply.<br>
> I am not sure what could have caused that, this is a
fairly simple<br>
> cPanel (Exim) + ConfigServer Mailscanner setup. No
special<br>
> configuration. I have contacted ConfigServer's support
first, this was<br>
> their answer:<br>
> <br>
> "Outbound notification from MailScanner does not have the
envelope-from<br>
> field and therefore the From in MailControl is not
populated. I'm afraid<br>
> there's nothing we can do from our end to resolve this
issue, you'd need<br>
> to check the MailScanner newsgroup to find out if there
is anything that<br>
> can be done."<br>
<br>
<br>
I guess this is an issue with MailControl. If MailControl is
rewriting<br>
the From: with the envelope sender, they just can't handle
this mail.<br>
Judging from their web site, I think it's likely they are
doing just that.<br>
<br>
Note that a null MAIL FROM: address is perfectly legitimate
any time you<br>
don't want an undeliverable DSN returned. For one example,
almost all<br>
MTAs send DSNs with null MAIL FROM: to avoid bounce loops.
MailScanner<br>
does this with user notifications for similar reasons.<br>
<br>
Do you have to send mail via MailControl?<br>
<br>
Note that the places where MailScanner sends with a null
envelope are at<br>
<br>
<a
href="https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/MCPMessage.pm#L518"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/MCPMessage.pm#L518</a><br>
<br>
<a
href="https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/MCPMessage.pm#L566"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/MCPMessage.pm#L566</a><br>
<br>
Although MCP probably isn't involved in your case, and<br>
<br>
<a
href="https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/Message.pm#L1558"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/Message.pm#L1558</a><br>
<br>
<a
href="https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/Message.pm#L1606"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/Message.pm#L1606</a><br>
<br>
<a
href="https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/Message.pm#L1755"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/Message.pm#L1755</a><br>
<br>
<a
href="https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/Message.pm#L6618"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://github.com/MailScanner/v5/blob/master/common/usr/share/MailScanner/perl/MailScanner/Message.pm#L6618</a><br>
<br>
You could patch those lines changing '<>' to
$localpostmaster. I.e.<br>
change something like<br>
<br>
... SendMessageString($this, $emailmsg, '<>')<br>
<br>
to<br>
<br>
... SendMessageString($this, $emailmsg, $localpostmaster)<br>
<br>
-- <br>
Mark Sapiro <<a href="mailto:mark@msapiro.net"
target="_blank" moz-do-not-send="true">mark@msapiro.net</a>>
The highway is for gamblers,<br>
San Francisco Bay Area, California better use your sense -
B. Dylan<br>
<br>
<br>
-- <br>
MailScanner mailing list<br>
<a href="mailto:mailscanner@lists.mailscanner.info"
target="_blank" moz-do-not-send="true">mailscanner@lists.mailscanner.info</a><br>
<a
href="http://lists.mailscanner.info/mailman/listinfo/mailscanner"
rel="noreferrer" target="_blank" moz-do-not-send="true">http://lists.mailscanner.info/mailman/listinfo/mailscanner</a><br>
<br>
</blockquote>
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<div class="moz-signature">-- <br>
<img src="http://mailserver.summitgrid.org/logo_text_sig.png"><br>
Shawn Iverson<br>
<a class="moz-txt-link-abbreviated" href="mailto:shawniverson@summitgrid.com">shawniverson@summitgrid.com</a><br>
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