#1020229 claws-mail: add support for auto-configuring SMTP with implicit TLS

Package:
claws-mail
Source:
claws-mail
Description:
Fast, lightweight and user-friendly GTK based email client
Submitter:
Vilius Panevėžys
Date:
2026-10-29 17:39:19 UTC
Severity:
normal
Tags:
#1020229#5
Date:
2022-09-18 14:20:12 UTC
From:
To:
Dear Maintainer,
when using the auto-configure feature of a new account creation only
"_submission._tcp.example.net" SRV record is queried, but not
"_submissions._tcp.example.net". If example.net domain only has the
latter SRV record, auto-configuration of SMTP server fails with the
message "Failed: no service record found" next to the "Auto-configure"
button.

Section 5.1 of RFC 8314 starts with the following.

Please add support for querying the Implicit TLS SRV record in account
auto-configuration as defined above.
#1020229#10
Date:
2022-10-02 10:44:53 UTC
From:
To:
control: forwarded -1 https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4632

Thanks for reporting, forwarding upstream.

regards,
#1020229#17
Date:
2022-10-02 14:37:24 UTC
From:
To:
control: tags -1 moreinfo

Hello Vilius,

Is there any (publicly available) server where this can be tested?

regards,
#1020229#24
Date:
2022-10-02 18:21:53 UTC
From:
To:
control: tags -1 - moreinfo

Hi Ricardo,
it's reproducible on the domain I'm using. However, I would use a local
daemon to have the flexibility to easily tweak the records as needed in
the course of testing.

I did a quick test with

`sudo dnsmasq -ha 127.0.0.1 --mx-host cm.test,mx.cm.test,10 --srv-host _pop3s._tcp.cm.test,pop.cm.test,995,0,1 --srv-host _imaps._tcp.cm.test,imap.cm.test,993,0,1 --srv-host _submissions._tcp.cm.test,smtp.cm.test,465,0,1`

and it seems to be sufficient to serve the MX-related records and
reproduce the issue (after adding 127.0.0.1 to /etc/resolv.conf).

Let me know if there's anything else I can do to help.