Bug 4830 - Support _submissions._tcp SRV Records for SMTP Server Auto-Configure
Summary: Support _submissions._tcp SRV Records for SMTP Server Auto-Configure
Status: NEW
Alias: None
Product: Claws Mail
Classification: Unclassified
Component: Other (show other bugs)
Version: 4.3.0
Hardware: PC Windows 10
: P3 enhancement
Assignee: users
URL:
Depends on:
Blocks:
 
Reported: 2024-10-03 16:29 UTC by Zero
Modified: 2024-10-03 16:29 UTC (History)
0 users

See Also:

Attachments
Wireshark (Standard query response) (55.39 KB, image/png)
2024-10-03 16:29 UTC, Zero 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Zero 2024-10-03 16:29:21 UTC 
Created attachment 2512 [details]
Wireshark (Standard query response)

When adding a new email account using the “Auto-configure” feature in Claws Mail, the client performs DNS SRV queries to discover server settings for IMAP (_imaps._tcp.<domain> / _imap._tcp.<domain>), POP (_pop3s._tcp.<domain> / _pop3._tcp.<domain>), and SMTP (_submission._tcp.<domain>).

However, for domains that utilize only _submissions._tcp.<domain> as specified in RFC 8314, Section 5.1, the SMTP server is not automatically discovered because Claws Mail currently checks only for _submission._tcp.<domain>.

Enhancement Request:

Primary Check: Modify the automatic configuration process to first check for _submissions._tcp.<domain> when attempting to discover the SMTP server.
Fallback: If _submissions._tcp.<domain> is not found, then fallback to checking _submission._tcp.<domain>, mirroring the behavior used in other service queries.
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