<?xml version="1.0" encoding="UTF-8"?>        <rss version="2.0"
             xmlns:atom="http://www.w3.org/2005/Atom"
             xmlns:dc="http://purl.org/dc/elements/1.1/"
             xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
             xmlns:admin="http://webns.net/mvcb/"
             xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
             xmlns:content="http://purl.org/rss/1.0/modules/content/">
        <channel>
            <title>
									How to turn off greylisting? - Zimbra Build by Zextras - no Zextras support guaranteed				            </title>
            <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/</link>
            <description>Zextras Community Discussion Board</description>
            <language>en-US</language>
            <lastBuildDate>Sat, 11 Apr 2026 23:09:43 +0000</lastBuildDate>
            <generator>wpForo</generator>
            <ttl>60</ttl>
							                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3488</link>
                        <pubDate>Thu, 21 Jul 2022 16:36:11 +0000</pubDate>
                        <description><![CDATA[@daz Dnsbl can be used directly to postfix, i suggest you to read postfix or zimbra documentation, here an example:
zmprov ms `zmhostname` +zimbraMtaRestriction  &#039;RBL type you want&#039;
Postsc...]]></description>
                        <content:encoded><![CDATA[<p>@daz Dnsbl can be used directly to postfix, i suggest you to read postfix or zimbra documentation, here an example:</p>
<pre contenteditable="false">zmprov ms `zmhostname` +zimbraMtaRestriction  'RBL type you want'</pre>
<p>Postscreen was implement as first layer of test and protect postfix ( useful if you have a lot of email traffic, small server not need at all ... )</p>
<p>If you want to continue to test postscreen configuration i suggest to try to disable all the postscreen feature https://community.zextras.com/how-to-use-zimbra-postscreen/ and set <code>zimbraMtaPostscreen.*Action</code> to ignore and then enable one at time and test it.</p>
<p>I hope that you can find a good solution for your server.</p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>mgarbo</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3488</guid>
                    </item>
				                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3487</link>
                        <pubDate>Thu, 21 Jul 2022 15:31:20 +0000</pubDate>
                        <description><![CDATA[Posted by: @mgarbo 
@daz Postscreen = Greylist , the only way to disable it is to whitelist all the network. Please re-read all the topics and manual before proceeding to ask same things.
...]]></description>
                        <content:encoded><![CDATA[<blockquote data-userid="1728" data-postid="3486" data-mention="mgarbo">
<div class="wpforo-post-quote-author"><strong> Posted by: @mgarbo </strong></div>
<p>@daz Postscreen = Greylist , the only way to disable it is to whitelist all the network. Please re-read all the topics and manual before proceeding to ask same things.</p>
</blockquote>
<p>Postscreen is so much more than greylisting.It's also DNSBL and I do not want to remove that part of the filters.</p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>daz</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3487</guid>
                    </item>
				                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3486</link>
                        <pubDate>Thu, 21 Jul 2022 15:25:16 +0000</pubDate>
                        <description><![CDATA[@daz Postscreen = Greylist , the only way to disable it is to whitelist all the network. Please re-read all the topics and manual before proceeding to ask same things.]]></description>
                        <content:encoded><![CDATA[<p>@daz Postscreen = Greylist , the only way to disable it is to whitelist all the network. Please re-read all the topics and manual before proceeding to ask same things.</p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>mgarbo</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3486</guid>
                    </item>
				                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3484</link>
                        <pubDate>Thu, 21 Jul 2022 14:36:49 +0000</pubDate>
                        <description><![CDATA[Posted by: @mgarbo 
@daz This will disable postscreen analysis because this told postscreen to trust every connection from internet... postscreen is not postfix .
i suggest you to study po...]]></description>
                        <content:encoded><![CDATA[<blockquote data-userid="1728" data-postid="3483" data-mention="mgarbo">
<div class="wpforo-post-quote-author"><strong> Posted by: @mgarbo </strong></div>
<p>@daz This will disable postscreen analysis because this told postscreen to trust every connection from internet... postscreen is not postfix .</p>
<p>i suggest you to study postfix : <a href="https://www.postfix.org/postconf.5.html#mynetworks" target="_blank" rel="noopener">https://www.postfix.org/postconf.5.html#mynetworks</a></p>
<p>After that try to send an email using telnet and see what happen.</p>
</blockquote>
<p>But I don't want to trust all networks, I just want to turn off greylisting and still keep all other filters active. Greylisting creates too much problems than it fixes now.</p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>daz</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3484</guid>
                    </item>
				                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3483</link>
                        <pubDate>Thu, 21 Jul 2022 14:27:02 +0000</pubDate>
                        <description><![CDATA[@daz This will disable postscreen analysis because this told postscreen to trust every connection from internet... postscreen is not postfix .
i suggest you to study postfix :
After that t...]]></description>
                        <content:encoded><![CDATA[<p>@daz This will disable postscreen analysis because this told postscreen to trust every connection from internet... postscreen is not postfix .</p>
<p>i suggest you to study postfix : <a href="https://www.postfix.org/postconf.5.html#mynetworks" target="_blank" rel="noopener">https://www.postfix.org/postconf.5.html#mynetworks</a> </p>
<p>After that try to send an email using telnet and see what happen.</p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>mgarbo</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3483</guid>
                    </item>
				                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3482</link>
                        <pubDate>Thu, 21 Jul 2022 12:19:35 +0000</pubDate>
                        <description><![CDATA[Posted by: @mgarbo 

 Posted by: @daz 

 Posted by: @mgarbo 

 Posted by: @daz 
I&#039;m  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.
I c...]]></description>
                        <content:encoded><![CDATA[<blockquote data-userid="1728" data-postid="3481" data-mention="mgarbo">
<div class="wpforo-post-quote-author"><strong> Posted by: @mgarbo </strong></div>
<blockquote data-userid="57348" data-postid="3480" data-mention="daz">
<div class="wpforo-post-quote-author"><strong> Posted by: @daz </strong></div>
<blockquote data-userid="1728" data-postid="3479" data-mention="mgarbo">
<div class="wpforo-post-quote-author"><strong> Posted by: @mgarbo </strong></div>
<blockquote data-userid="57348" data-postid="3475" data-mention="daz">
<div class="wpforo-post-quote-author"><strong> Posted by: @daz </strong></div>
<p>I'm  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.</p>
<p>I can't find out how to do this though. Anyone have instructions on how to do this?</p>
</blockquote>
<p>Are you talking about postscreen?</p>
<p><a href="https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen" target="_blank" rel="noopener">https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen</a></p>
<p> </p>
</blockquote>
<p>Actually I don't know what part of zimbra does the greylisting part. Might be postscreen.</p>
<p>All I know is greylisting is a problem when getting emails from some providers or MFA codes or password reset links that needs to be done in a short time.</p>
<p>Right now I have services I can not reset password for or login to as the link or code takes to long to come through that the longin/reset time timeouts.</p>
<p> </p>
<p>Thats why I need to remove greylisting all together. Not sure how to do this, I have googled but I can not find a real answer for it.</p>
</blockquote>
<p>As zimbra run the following syntax :</p>
<pre contenteditable="false">zmprov mcf zimbraMtaPostscreenAccessList 'permit, permit_mynetworks'</pre>
<p>After that restart mta</p>
<p>Finally verify if postfix config is correctly rewritten:</p>
<pre contenteditable="false">postconf |grep postscreen_access_list</pre>
<p>If nothing has changed probably is defined at server level, then you need to modify by modifyServer zmprov comand.</p>
<p>Remember that postscreen is something that help you to fight spam and bot system, there are different way to fix sending delay ( example whitelist ip etc etcc.. )</p>
<p>I suggest you to read/study postscreen manual <a href="https://www.postfix.org/POSTSCREEN_README.html" target="_blank" rel="noopener">https://www.postfix.org/POSTSCREEN_README.html</a></p>
</blockquote>
<p>Will this not allow everyone to send through my server? </p>
<p>Can you explain to me exactly what this does before I implement it?</p>
<p> </p>
<p>Right now the config is: postscreen_access_list = permit_mynetworks</p>
<p> </p>
<p>Regards</p>
<p>Daniel</p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>daz</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3482</guid>
                    </item>
				                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3481</link>
                        <pubDate>Thu, 21 Jul 2022 10:17:16 +0000</pubDate>
                        <description><![CDATA[Posted by: @daz 

 Posted by: @mgarbo 

 Posted by: @daz 
I&#039;m  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.
I can&#039;t find out how to do ...]]></description>
                        <content:encoded><![CDATA[<blockquote data-userid="57348" data-postid="3480" data-mention="daz">
<div class="wpforo-post-quote-author"><strong> Posted by: @daz </strong></div>
<blockquote data-userid="1728" data-postid="3479" data-mention="mgarbo">
<div class="wpforo-post-quote-author"><strong> Posted by: @mgarbo </strong></div>
<blockquote data-userid="57348" data-postid="3475" data-mention="daz">
<div class="wpforo-post-quote-author"><strong> Posted by: @daz </strong></div>
<p>I'm  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.</p>
<p>I can't find out how to do this though. Anyone have instructions on how to do this?</p>
</blockquote>
<p>Are you talking about postscreen?</p>
<p><a href="https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen" target="_blank" rel="noopener">https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen</a></p>
<p> </p>
</blockquote>
<p>Actually I don't know what part of zimbra does the greylisting part. Might be postscreen.</p>
<p>All I know is greylisting is a problem when getting emails from some providers or MFA codes or password reset links that needs to be done in a short time.</p>
<p>Right now I have services I can not reset password for or login to as the link or code takes to long to come through that the longin/reset time timeouts.</p>
<p> </p>
<p>Thats why I need to remove greylisting all together. Not sure how to do this, I have googled but I can not find a real answer for it.</p>
</blockquote>
<p>As zimbra run the following syntax :</p>
<pre contenteditable="false">zmprov mcf zimbraMtaPostscreenAccessList 'permit, permit_mynetworks'</pre>
<p>After that restart mta</p>
<p>Finally verify if postfix config is correctly rewritten:</p>
<pre contenteditable="false">postconf |grep postscreen_access_list</pre>
<p>If nothing has changed probably is defined at server level, then you need to modify by modifyServer zmprov comand.</p>
<p>Remember that postscreen is something that help you to fight spam and bot system, there are different way to fix sending delay ( example whitelist ip etc etcc.. )</p>
<p>I suggest you to read/study postscreen manual <a href="https://www.postfix.org/POSTSCREEN_README.html" target="_blank" rel="noopener">https://www.postfix.org/POSTSCREEN_README.html</a></p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>mgarbo</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3481</guid>
                    </item>
				                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3480</link>
                        <pubDate>Thu, 21 Jul 2022 07:51:30 +0000</pubDate>
                        <description><![CDATA[Posted by: @mgarbo 

 Posted by: @daz 
I&#039;m  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.
I can&#039;t find out how to do this though. Anyone h...]]></description>
                        <content:encoded><![CDATA[<blockquote data-userid="1728" data-postid="3479" data-mention="mgarbo">
<div class="wpforo-post-quote-author"><strong> Posted by: @mgarbo </strong></div>
<blockquote data-userid="57348" data-postid="3475" data-mention="daz">
<div class="wpforo-post-quote-author"><strong> Posted by: @daz </strong></div>
<p>I'm  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.</p>
<p>I can't find out how to do this though. Anyone have instructions on how to do this?</p>
</blockquote>
<p>Are you talking about postscreen?</p>
<p><a href="https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen" target="_blank" rel="noopener">https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen</a></p>
<p> </p>
</blockquote>
<p>Actually I don't know what part of zimbra does the greylisting part. Might be postscreen.</p>
<p>All I know is greylisting is a problem when getting emails from some providers or MFA codes or password reset links that needs to be done in a short time.</p>
<p>Right now I have services I can not reset password for or login to as the link or code takes to long to come through that the longin/reset time timeouts.</p>
<p> </p>
<p>Thats why I need to remove greylisting all together. Not sure how to do this, I have googled but I can not find a real answer for it.</p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>daz</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3480</guid>
                    </item>
				                    <item>
                        <title>RE: How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3479</link>
                        <pubDate>Thu, 21 Jul 2022 07:20:13 +0000</pubDate>
                        <description><![CDATA[Posted by: @daz 
I&#039;m  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.
I can&#039;t find out how to do this though. Anyone have instructions on how ...]]></description>
                        <content:encoded><![CDATA[<blockquote data-userid="57348" data-postid="3475" data-mention="daz">
<div class="wpforo-post-quote-author"><strong> Posted by: @daz </strong></div>
<p>I'm  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.</p>
<p>I can't find out how to do this though. Anyone have instructions on how to do this?</p>
</blockquote>
<p>Are you talking about postscreen?</p>
<p><a href="https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen" target="_blank" rel="noopener">https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen</a></p>
<p>https://community.zextras.com/what-is-zimbra-postscreen/ </p>
<p> </p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>mgarbo</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3479</guid>
                    </item>
				                    <item>
                        <title>How to turn off greylisting?</title>
                        <link>https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3475</link>
                        <pubDate>Tue, 19 Jul 2022 10:29:42 +0000</pubDate>
                        <description><![CDATA[I&#039;m  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.
I can&#039;t find out how to do this though. Anyone have instructions on how to do this?]]></description>
                        <content:encoded><![CDATA[<p>I'm  trying to remove greylisting all together in my setup as I only see it breaking stuff for me.</p>
<p>I can't find out how to do this though. Anyone have instructions on how to do this?</p>]]></content:encoded>
						                            <category domain="https://community.zextras.com/forum/zimbra-ose-9-by-zextras/">Zimbra Build by Zextras - no Zextras support guaranteed</category>                        <dc:creator>daz</dc:creator>
                        <guid isPermaLink="true">https://community.zextras.com/forum/zimbra-ose-9-by-zextras/how-to-turn-off-greylisting/#post-3475</guid>
                    </item>
							        </channel>
        </rss>
		