smtp 587 always fails to send email

smtp 587 always fails to send email

[Alice Bob]

Port number 587 always fails to send emails. The traces:

502 5.5.2 Error: command not recognized
502 5.5.2 Error: command not recognized
502 5.5.2 Error: command not recognized
500 5.5.2 Error: bad syntax
500 5.5.2 Error: bad syntax
500 5.5.2 Error: bad syntax

However I can connect to the smtp server on command line:

`gnutls-cli --verbose --crlf --starttls --insecure --port=587 smtp.zoho.com'

The relevant configs:

(setq send-mail-function 'smtpmail-send-it
      message-send-mail-function 'smtpmail-send-it
      smtpmail-default-smtp-server nil
      smtpmail-stream-type 'ssl
      smtpmail-smtp-service 587)
(setq smtpmail-smtp-server "smtp.zoho.com")

1. I am sure port 587 is allowed on firewall.
2. 587 fails for all different smtp servers (outlook etc.)

Could some guys give some hints?
-- 
horizon

Re: smtp 587 always fails to send email

[Adam Sjøgren]

Alice writes:

>       smtpmail-stream-type 'ssl

That doesn't mean STARTTLS, does it? Try 'starttls instead.


,----[ C-h v smtpmail-stream-type RET ]
| smtpmail-stream-type is a variable defined in `smtpmail.el'.
| Its value is nil
| 
| Documentation:
| Type of SMTP connections to use.
| This may be either nil (possibly upgraded to STARTTLS if possible),
| or `starttls' (refuse to send if STARTTLS isn't available), or `plain'
| (never use STARTTLS), or `ssl' (to use TLS/SSL).
`----


  Best regards,

    Adam

-- 
 "You know, this may sound just a teensy bit insane in        Adam Sjøgren
  the old membrane, Homer, but I was wondering if you    asjo@koldfront.dk
  could show me how to have some fun?"


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Re: smtp 587 always fails to send email

[Byung-Hee HWANG (황병희, 黃炳熙)]

[Wow you writes at quimby! Nice to meet you!]

Alice Bob <alicebob@riseup.net> 께서 쓰시길,
 《記事 全文 <87lgxdvqh0.fsf@riseup.net> 에서》:

> Port number 587 always fails to send emails. The traces:
>
> 502 5.5.2 Error: command not recognized
> 502 5.5.2 Error: command not recognized
> 502 5.5.2 Error: command not recognized
> 500 5.5.2 Error: bad syntax
> 500 5.5.2 Error: bad syntax
> 500 5.5.2 Error: bad syntax
>
> However I can connect to the smtp server on command line:
>
> `gnutls-cli --verbose --crlf --starttls --insecure --port=587 smtp.zoho.com'
>
> The relevant configs:
>
> (setq send-mail-function 'smtpmail-send-it
>       message-send-mail-function 'smtpmail-send-it
>       smtpmail-default-smtp-server nil
>       smtpmail-stream-type 'ssl
>       smtpmail-smtp-service 587)
> (setq smtpmail-smtp-server "smtp.zoho.com")
>
> 1. I am sure port 587 is allowed on firewall.
> 2. 587 fails for all different smtp servers (outlook etc.)
>
> Could some guys give some hints?

Dear Alice,

If i were you, i would like to show version of Gnus and Emacs. Because
current Gnus source codes were changed a lot. In other words, 5.13 is
not 5.13 (GNU/Emacs 23's Gnus was 5.13, and GNU/Emacs 25's Gnus is also
5.13).  
 
-- 
^고맙습니다 _地平天成_ 감사합니다_^))//
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Re: smtp 587 always fails to send email

[Alice Bob]

soyeomul@yw.doraji.xyz (Byung-Hee HWANG "(황병희, 黃炳熙)")
writes:

>>       smtpmail-stream-type 'ssl
>>       smtpmail-smtp-service 587)
>> (setq smtpmail-smtp-server "smtp.zoho.com")
>>
>> 1. I am sure port 587 is allowed on firewall.
>> 2. 587 fails for all different smtp servers (outlook etc.)
>>
>> Could some guys give some hints?
>
> Dear Alice,
>
> If i were you, i would like to show version of Gnus and Emacs. Because
> current Gnus source codes were changed a lot. In other words, 5.13 is
> not 5.13 (GNU/Emacs 23's Gnus was 5.13, and GNU/Emacs 25's Gnus is also
> 5.13).  

Thanks to Byung-Hee. The issue was solved withe help from Eric S
Fraga <e.fraga@ucl.ac.uk> on this channel.

To send on port 587, `smtpmail-stream-type' should be 'starttls.
To send on port 465, `smtpmail-stream-type' can be 'ssl.
-- 
horizon
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Re: smtp 587 always fails to send email

[Byung-Hee HWANG (황병희, 黃炳熙)]

> To send on port 587, `smtpmail-stream-type' should be 'starttls.
> To send on port 465, `smtpmail-stream-type' can be 'ssl.

Very happy to know, thanks!!!

-- 
^고맙습니다 _地平天成_ 감사합니다_^))//
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Re: smtp 587 always fails to send email

[You Wu]

asjo@koldfront.dk (Adam Sjøgren) writes:

> You writes:
>
>> Concerning security level, which one is better? 587 on `starttls'
>> or 465 on `ssl'?
>
> Both are fine, if your client stops if STARTTLS doesn't work/isn't
> available.
I saw `gnutls-cli --insecure...' when connecting to emails
servers occasionally. I don't know whether it's related to the
`starttl' setting.

Seems this occured much back in Emacs 24. I am now on Emacs 25.
> (Otherwise if an interceptor could remove the STARTTLS support
> announcement from the server, and if the client continues in
> non-encrypted mode, then it would be bad. smtpmail does the right thing,
> though:
>
>   "starttls to insist on STARTTLS"
>    - https://www.gnu.org/software/emacs/manual/html_node/smtpmail/Encryption.html
> )
>
>
>   Best regards,
>
>     Adam

-- 
Hello, world

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Re: smtp 587 always fails to send email

[Adam Sjøgren]

You writes:

> Concerning security level, which one is better? 587 on `starttls'
> or 465 on `ssl'?

Both are fine, if your client stops if STARTTLS doesn't work/isn't
available.

(Otherwise if an interceptor could remove the STARTTLS support
announcement from the server, and if the client continues in
non-encrypted mode, then it would be bad. smtpmail does the right thing,
though:

  "starttls to insist on STARTTLS"
   - https://www.gnu.org/software/emacs/manual/html_node/smtpmail/Encryption.html
)


  Best regards,

    Adam

-- 
 "It seems like the finals for "least helpful answer          Adam Sjøgren
  on a mailing list" are coming up again."               asjo@koldfront.dk


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Re: smtp 587 always fails to send email

[You Wu]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="gb18030", Size: 578 bytes --]

asjo@koldfront.dk (Adam Sj0‹3gren) writes:

> Alice writes:
>
>> `starttls works on port 587;
>
> Yup, because 587 is 'submission', which does not traditionally mean
> TLS/SSL, while:
>
>> `ssl works on port 465.
>
> Is 'smtps', which is SMTP over TLS/SSL.
>
>
>   Best regards,
>
>     Adam
Many thanks to Adam!

Concerning security level, which one is better? 587 on `starttls'
or 465 on `ssl'?
-- 
Hello, world

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Re: smtp 587 always fails to send email

[Adam Sjøgren]

Alice writes:

> `starttls works on port 587;

Yup, because 587 is 'submission', which does not traditionally mean
TLS/SSL, while:

> `ssl works on port 465.

Is 'smtps', which is SMTP over TLS/SSL.


  Best regards,

    Adam

-- 
 "[It] was a rapsidie of faigned and ill-invented             Adam Sjøgren
  nonsense, patched up partly of the morall doctrine of  asjo@koldfront.dk
  philosophers, and pairtly of poeticall fictions and
  extravagant chimeras."


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Re: smtp 587 always fails to send email

[Alice Bob]

Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> On Monday, 24 Oct 2016 at 13:14, Alice Bob wrote:
>> However I can connect to the smtp server on command line:
>>
>> `gnutls-cli --verbose --crlf --starttls --insecure --port=587 smtp.zoho.com'
>>
>> The relevant configs:
>>
>> (setq send-mail-function 'smtpmail-send-it
>>       message-send-mail-function 'smtpmail-send-it
>>       smtpmail-default-smtp-server nil
>>       smtpmail-stream-type 'ssl
>
> maybe try 'starttls in lieu of 'ssl?
Many thanks to Eric,

`starttls works on port 587;
`ssl works on port 465.

-- 
Hello, world

Re: smtp 587 always fails to send email

[Eric S Fraga]

On Monday, 24 Oct 2016 at 13:14, Alice Bob wrote:
> However I can connect to the smtp server on command line:
>
> `gnutls-cli --verbose --crlf --starttls --insecure --port=587 smtp.zoho.com'
>
> The relevant configs:
>
> (setq send-mail-function 'smtpmail-send-it
>       message-send-mail-function 'smtpmail-send-it
>       smtpmail-default-smtp-server nil
>       smtpmail-stream-type 'ssl

maybe try 'starttls in lieu of 'ssl?

-- 
: Eric S Fraga, GnuPG: 0xFFFCF67D
: in Emacs 26.0.50.1 + Gnus v5.13 + evil-git-ff74cfb
: BBDB version 3.1.2 (2016-07-21 10:12:09+00:00)