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	<id>http://wiki.qmailtoaster.org:80/index.php?action=history&amp;feed=atom&amp;title=Attachment_size_limitations</id>
	<title>Attachment size limitations - Revision history</title>
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	<updated>2026-04-29T12:39:16Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>http://wiki.qmailtoaster.org:80/index.php?title=Attachment_size_limitations&amp;diff=133&amp;oldid=prev</id>
		<title>Ebroch: Created page with &quot;===Attachment size limitations===  The default setting for &#039;databytes&#039; is 20971520 which is a sane, default number.  But MIME overhead is fairly high, so that 20m limit means you may not be able to receive attachments larger that 12-15m.  That may seem to not be a problem, but if you host a domain that deals in large attachments for data transfer, you may need to increase that number in /var/qmail/control/databytes.  You could set that to 0 (not advisable) to accept atta...&quot;</title>
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		<updated>2024-03-16T16:28:17Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;===Attachment size limitations===  The default setting for &amp;#039;databytes&amp;#039; is 20971520 which is a sane, default number.  But MIME overhead is fairly high, so that 20m limit means you may not be able to receive attachments larger that 12-15m.  That may seem to not be a problem, but if you host a domain that deals in large attachments for data transfer, you may need to increase that number in /var/qmail/control/databytes.  You could set that to 0 (not advisable) to accept atta...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;===Attachment size limitations===&lt;br /&gt;
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The default setting for &amp;#039;databytes&amp;#039; is 20971520 which is a sane, default number.  But MIME overhead is fairly high, so that 20m limit means you may not be able to receive attachments larger that 12-15m.  That may seem to not be a problem, but if you host a domain that deals in large attachments for data transfer, you may need to increase that number in /var/qmail/control/databytes.  You could set that to 0 (not advisable) to accept attachments regardless of size, or figure out what is the largest attachment you will recieve, then double that in the databytes file.  Yes, ftp would be a better answer for moving that chunk of data around.  Do you really want to have to talk the sender through a filezilla download, install, configure, connect, and upload, or worse, a command session?  Point is that email is more widely known than the venerable ftp, and most everybody has an email client already installed and knows how to use it.&lt;br /&gt;
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==[[User Tips &amp;amp; Tricks]]==&lt;/div&gt;</summary>
		<author><name>Ebroch</name></author>
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