[Users] recently occurring problems sending thru SMTP

[Dave Howorth]

On Mon, 2 Sep 2024 05:55:04 -0000
Paul <paul at claws-mail.org> wrote:

> On Thu, 29 Aug 2024 21:37:26 +1000 (AEST)
> Raif Naffah via Users <users at lists.claws-mail.org> wrote: 
> 
> > * both IMAP and SMTP use TLS.
> > * IMAP: Authentication method is set to Automatic.
> > * SMTP: Authentication method is LOGIN using provider's User ID and
> > Password.
> > * IMAP uses port 465, while IMAP uses 993.  
> 
> Have you got the ports set correctly? The one's you mention are for
> non-TLS connections, (according to what I've found).
> 
> Turn on TLS for both IMAP and SMTP, and set the ports thus
> 
> 143 (IMAP)
> 587 (SMTP)

I'm no expert but I think 143 is for IMAP *without* TLS

https://www.cloudflare.com/learning/email-security/smtp-port-25-587/

993 is correct for encrypted IMAP.

465 was previously used for SMTP but now it is 587.

> with regards
> 
> Paul
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