Bug 38948 – check HELO string against reverse DNS entry

Bug 38948 - check HELO string against reverse DNS entry


Summary:	check HELO string against reverse DNS entry

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	Mail
Version:	UCS 4.0
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	UCS 4.1
Assigned To:	Daniel Tröder
QA Contact:	Sönke Schwardt-Krummrich

URL:
Keywords:	interim-1

Depends on:	38292
Blocks:
	Show dependency tree / graph

Reported:	2015-07-17 16:03 CEST by Daniel Tröder
Modified:	2015-11-17 12:12 CET (History)
CC List:	2 users (show)

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Description Daniel Tröder

2015-07-17 16:03:08 CEST

+++ This bug was initially created as a clone of Bug #38292 +++

Postfix should check the HELO string against the reverse DNS entry.
The feature should be configurable via a UCR variable.

Comment 1 Daniel Tröder

2015-07-17 16:04:40 CEST

Commit 62216 introduces the UCRVs
* mail/postfix/smtpd/restrictions/sender/reject_unknown_client_hostname
* mail/postfix/smtpd/restrictions/sender/reject_unknown_reverse_client_hostname

They are added to smtpd_recipient_restrictions after reject_unauth_destination (position is calculated dynamically).

Comment 2 Sönke Schwardt-Krummrich

2015-07-27 12:56:25 CEST

The latest code change of Bug #38292 in UCS 4.0-2 has not been merged yet.

Comment 3 Daniel Tröder

2015-07-27 14:49:06 CEST

Commit 62427 modified the smtp_restrictions sorting code to be safer (with numbers >99). (Commit 62428 corrects the changelog entry.)

Comment 4 Sönke Schwardt-Krummrich

2015-10-05 12:46:01 CEST

OK: diff shows no relevant differing lines between ucs-4.0-3 and ucs-4.1-0 in 
    mail/univention-mail-postfix

Comment 5 Stefan Gohmann

2015-11-17 12:12:47 CET

UCS 4.1 has been released:
 https://docs.software-univention.de/release-notes-4.1-0-en.html
 https://docs.software-univention.de/release-notes-4.1-0-de.html

If this error occurs again, please use "Clone This Bug".