Bug 920060

Summary:	Standard config file has an IPv6 problem
Product:	[Fedora] Fedora EPEL	Reporter:	Alain D D Williams <addw>
Component:	exim	Assignee:	Mark Chappell <tremble>
Status:	CLOSED EOL	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	el6	CC:	dwmw2, jskarvad, mchappel, tremble
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-11-30 15:07:41 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Alain D D Williams 2013-03-11 09:50:15 UTC

Description of problem:

Attempting to relay via localhost will fail if connecting via IPv6 localhost but works if connecting via IPv4 localhost. This is because /etc/exim.conf contains the line:

   hostlist   relay_from_hosts = 127.0.0.1

This line should read:

   hostlist   relay_from_hosts = localhost

Since /etc/hosts contains both the IPv4 and IPv6 definitions of locahost.

You could also use:

   hostlist relay_from_hosts = <; 127.0.0.1; ::1

I had come across this and it has just been raised on the exim.users mail list -- where I promised that I would raise a bug here.

Comment 1 Mark Chappell 2013-03-11 09:58:36 UTC

This actually comes directly from upstream.

https://github.com/Exim/exim/blob/master/src/src/configure.default#L59


Mark

Comment 2 Alain D D Williams 2013-03-11 10:28:05 UTC

After submitting the above I continued to browse the default exim.conf and I notice that the following should also be fixed:

Line 96 and following has an IPv4 only discussion:
# hostlist relay_from_hosts = 127.0.0.1 : 192.168.0.0/16

Line 635, the dnslookup router is IPv4 only:

dnslookup:
  driver = dnslookup
  domains = ! +local_domains
  transport = remote_smtp
  ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
  no_more

You should replace the 5th line by:

  ignore_target_hosts = 0.0.0.0 : localhost

I don't know what the IPv6 representation of 0.0.0.0 is.

Comment 3 Alain D D Williams 2013-03-11 10:30:06 UTC

Thanks for pointing that out Mark. I have made a change on github. I do not know how long that will take to be put into the default config (I have not used github before). I will also raise this as a bug onto exim's bugzilla.

Comment 4 Alain D D Williams 2013-03-11 10:44:58 UTC

This was raised on the exim bugs list some time ago:
http://bugs.exim.org/show_bug.cgi?id=880

I have taken ownership of the bug.

Comment 5 Ben Cotton 2020-11-05 16:53:38 UTC

This message is a reminder that EPEL 6 is nearing its end of life. Fedora will stop maintaining and issuing updates for EPEL 6 on 2020-11-30. It is our policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a 'version' of 'el6'.

Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later EPEL version.

Thank you for reporting this issue and we are sorry that we were not able to fix it before EPEL 6 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged  change the 'version' to a later Fedora version prior this bug is closed as described in the policy above.

Comment 6 Ben Cotton 2020-11-05 16:56:15 UTC

This message is a reminder that EPEL 6 is nearing its end of life. Fedora will stop maintaining and issuing updates for EPEL 6 on 2020-11-30. It is policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a 'version' of 'el6'.

Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later EPEL version.

Thank you for reporting this issue and we are sorry that we were not able to fix it before EPEL 6 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version, you are encouraged to change the 'version' to a later version prior this bug is closed as described in the policy above.

Comment 7 Ben Cotton 2020-11-30 15:07:41 UTC

EPEL el6 changed to end-of-life (EOL) status on 2020-11-30. EPEL el6 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
EPEL please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.