Bug 1787010

Summary:	[RFE] SRV lookup support while performing SMTP submissions in Postfix as per RFC6186 #section-3.1
Product:	Red Hat Enterprise Linux 8	Reporter:	Husam Ahmed Chaudhary <huchaudh>
Component:	postfix	Assignee:	Tomas Korbar <tkorbar>
Status:	CLOSED ERRATA	QA Contact:	František Hrdina <fhrdina>
Severity:	medium	Docs Contact:	Šárka Jana <sjanderk>
Priority:	medium
Version:	8.4	CC:	fhrdina, fkrska, jorton, jskarvad, psklenar, ravpatil, sbalasub, sjanderk, thozza, tkorbar
Target Milestone:	rc	Keywords:	AutoVerified, FutureFeature, Reopened, RFE, TestCaseProvided, Triaged
Target Release:	8.0
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:	postfix-3.5.8-6.el8	Doc Type:	Enhancement
Doc Text:	.Postfix now supports SRV lookups With this enhancement, you can now use the Postfix DNS service records resolution (SRV) to automatically configure mail clients and balance load of servers. Additionally, you can prevent mail delivery disruptions caused by temporary DNS issues or misconfigured SRV records by using the following SRV-related options in your Postfix configuration: `use_srv_lookup` :: You can enable discovery for the specified service by using DNS SRV records. `allow_srv_lookup_fallback` :: You can use a cascading approach to locating a service. `ignore_srv_lookup_error` :: You can ensure that the service discovery remains functional even if SRV records are not available or encounter errors.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-11-14 15:49:46 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:
Bug Depends On:
Bug Blocks:	1771008

Description Husam Ahmed Chaudhary 2019-12-30 10:16:03 UTC

Description of problem:

Add the ability to set postfix to find its SMTP Sumbission hosts in accordance with RFC6186#section-3.1

Version-Release number of selected component (if applicable):

Postfix

How reproducible:

Always


Actual results:

While sending mails , postfix is not performing SRV record Lookup.

Expected results:

Postfix must perform SRV lookups.

Additional info:

https://tools.ietf.org/html/rfc6186#section-3

Comment 18 Joe Orton 2022-09-20 15:04:22 UTC

Public update: Tomas has implemented SRV service lookup for postfix and submitted a patch to the upstream project for review. We are waiting on feedback, pending successful review this patch can be included in a future update to RHEL.

Comment 41 errata-xmlrpc 2023-11-14 15:49:46 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (postfix bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:7123