Comments on: IPv6 support for qmail-jms1

By: Dakon

Dakon — Thu, 24 Nov 2011 14:22:43 +0000

Why not simply use Qsmtp which has IPv6 support out of the box? If you find some features missing there just drop me a note or patch.

By: Paul

Paul — Fri, 11 Nov 2011 03:12:32 +0000

Here is another critical patch to the patch, this will prevent a segfault when and failing mail deliveries when connecting to an ipv6 mapped ipv4 address:

diff -Naur a/qmail-1.03-jms1.7.08-ipv6.patch b/qmail-1.03-jms1.7.08-ipv6.patch
— a/qmail-1.03-jms1.7.08-ipv6.patch 2011-11-10 22:05:43.407427100 -0500
+++ b/qmail-1.03-jms1.7.08-ipv6.patch 2011-11-10 22:06:18.972461300 -0500
@@ -490,7 +490,7 @@
+ for (j=0; jd,12,V4mappedprefix)) {
+ byte_copy(ip4.d, 4, ip6->d+12);
-+ temp=ip_fmt(s,ip4);
++ temp=ip_fmt(s,&ip4);
+ len+=temp;
+ s+=temp;
+ break;

By: Paul

Paul — Wed, 29 Sep 2010 02:36:03 +0000

@qmail admin

Here’s a patch to the patch that should fix the qmail-remote dying problem, when using bindroutes. It looks like it was just a bug in the patch.

— qmail-1.03-jms1.7.08-ipv6.patch 2009-03-20 12:33:50.000000000 -0400
+++ qmail-1.03-jms1.7.08-ipv6.patch-new 2010-09-28 22:32:56.000000000 -0400
@@ -1811,11 +1811,11 @@
– iplen = ip_fmt(ipstr,ip); /* Well, Dan seems to trust its output! */
+#ifdef INET6
+ if (ix->af == AF_INET)
-+ iplen = ip_fmt(ipstr,ix->addr.ip);
++ iplen = ip_fmt(ipstr,&ix->addr.ip);
+ else
-+ iplen = ip6_fmt(ipstr,ix->addr.ip6);
++ iplen = ip6_fmt(ipstr,&ix->addr.ip6);
+#else
-+ iplen = ip_fmt(ipstr,ix->addr.ip); /* Well, Dan seems to trust its output! */
++ iplen = ip_fmt(ipstr,&ix->addr.ip); /* Well, Dan seems to trust its output! */
+#endif

bindroute = constmap(&bindroutes,ipstr,iplen);

By: Guido De Vita

Guido De Vita — Fri, 24 Sep 2010 20:29:24 +0000

Check qmailboulders for extended information about installing qmail with ipv6 support. Has some cool extra info also

By: The Social Media Traffic Generation

The Social Media Traffic Generation — Sat, 31 Jul 2010 00:57:23 +0000

Could the IP Address Shortage Break the Internet?…

According to recent writings on IP address scarcity, the internet is growing FAST. So quickly in fact that we could exceed the number of currently available internet protocol addresses before the year is out. Under the current system as of now there …

By: qmail admin

qmail admin — Wed, 13 Jan 2010 14:19:01 +0000

Thanks, currently if you specify anything in control/bindroutes, qmail-remote is dying.

By: Brandon

Brandon — Wed, 06 Jan 2010 03:52:21 +0000

@qmail admin Great question. Looks like I missed this functionality. I'm not sure when I'll have time to work on this, but I'll try to get to it soon.

By: qmail admin

qmail admin — Sat, 02 Jan 2010 13:44:35 +0000

i have a question – how can i using this patch tell qmail-remote which IP address from a local pool use to deliver for ipv4 and which for ipv6? i mean control/bindroutes file, currently i use:

:127.18.11.22

but when qmail will be ipv6 friendly, how to provide ipv6 address as well?

By: qmail admin

qmail admin — Fri, 01 Jan 2010 13:22:01 +0000

very useful, thanks!

By: BenV

BenV — Tue, 06 Oct 2009 13:38:48 +0000

Thanks for the patch, works great