connections

[mechanic]

Just yesterday connections to a posteo.de imap server fail with
messages about tls not working (unexpected TCP input disconnect). I
changed the server name flag from /tls to /ssl but that doesn't work
either. I can see from the help page (Server Name Syntax) that there
are other flags but all seem to require Alpine linked with an SSL
library. This is running PC-Alpine so recompile would be
non-trivial!
My phone loads email from posteo ok using a Starttls setting, by the
way.So the basic imap server seems working.
Raised as a problem with posteo, seems like it's still an issue
today. Nothing on the posteo status page to indicate a wide spread
problem, so maybe an issue with the Alpine to server connection
settings.

Any thoughts on how to proceed?

[mechanic]

Post by mechanic
Just yesterday connections to a posteo.de imap server fail with
messages about tls not working (unexpected TCP input disconnect). I
changed the server name flag from /tls to /ssl but that doesn't work
either. I can see from the help page (Server Name Syntax) that there
are other flags but all seem to require Alpine linked with an SSL
library. This is running PC-Alpine so recompile would be
non-trivial!
My phone loads email from posteo ok using a Starttls setting, by the
way.So the basic imap server seems working.
Raised as a problem with posteo, seems like it's still an issue
today. Nothing on the posteo status page to indicate a wide spread
problem, so maybe an issue with the Alpine to server connection
settings.
Any thoughts on how to proceed?

Now message from the system is "aquire credentials handle failed".

[Eduardo Chappa]

Post by mechanic
Just yesterday connections to a posteo.de imap server fail with
messages about tls not working (unexpected TCP input disconnect). I
changed the server name flag from /tls to /ssl but that doesn't work
either. I can see from the help page (Server Name Syntax) that there
are other flags but all seem to require Alpine linked with an SSL
library. This is running PC-Alpine so recompile would be
non-trivial!

Which version of Alpine are you using? posteo.de uses TLSv1.2 and TLSv1.3,
in port 993 and TLSv1 in port 143 (starttls) and depending on which
version of Alpine you have and if it is 32/64 bits it will depend on what
your version of Alpine supports.

I am not in a position to test this at this moment, but I will in a few
days. In the mean time, I'd like to know about your setup so I can try to
reproduce it.

Thank you!

[mechanic]

Post by Eduardo Chappa

Post by mechanic
Just yesterday connections to a posteo.de imap server fail with
messages about tls not working (unexpected TCP input disconnect). I
changed the server name flag from /tls to /ssl but that doesn't work
either. I can see from the help page (Server Name Syntax) that there
are other flags but all seem to require Alpine linked with an SSL
library. This is running PC-Alpine so recompile would be
non-trivial!

Which version of Alpine are you using? posteo.de uses TLSv1.2 and TLSv1.3,
in port 993 and TLSv1 in port 143 (starttls) and depending on which
version of Alpine you have and if it is 32/64 bits it will depend on what
your version of Alpine supports.
I am not in a position to test this at this moment, but I will in a few
days. In the mean time, I'd like to know about your setup so I can try to
reproduce it.
Thank you!

This is PC_Alpine on 64 bit Win10. I have version 2.24.

Using the line {posteo.de/tls1_2/user=***@posteo.de}inbox
in the pinerc file.

I have tried the /tls /ssl /tls1_2 flags with various results, the
best is with /tls1_2 where the Inbox is reachable and I can read
individual posts. However if I try to select another folder from
the Folder List the Alpine application hangs with message 'aquire
credentials handle failed'; using the /tls or /ssl flags or no flag
shows 'unable to connect to posteo.de'

Thanks for your help!

[mechanic]

On Wed, 30 Dec 2020 23:01:05 +0000, mechanic wrote:

[snip]

Post by mechanic
This is PC_Alpine on 64 bit Win10. I have version 2.24.
in the pinerc file.
I have tried the /tls /ssl /tls1_2 flags with various results, the
best is with /tls1_2 where the Inbox is reachable and I can read
individual posts. However if I try to select another folder from
the Folder List the Alpine application hangs with message 'aquire
credentials handle failed'; using the /tls or /ssl flags or no flag
shows 'unable to connect to posteo.de'
Thanks for your help!

Well this problem appears to have cleared. I was going to do a
refresh of Windows, using DISM,and the initial preparation with a
system file scan - using "sfc /scannow" - showed up some corruption
in the system files, which it was able to clean up. Now Alpine
connects without a problem! This system is regularly updated but has
not had a clean reinstall for years.

Thanks Eduardo for the offer to help, but hopefully now not needed.

Happy New Year to everyone!