On Sunday, 22 January 2023 22:33:50 GMT Peter Humphrey wrote:
> On Thursday, 19 January 2023 09:30:34 GMT I wrote:
> > I'll see it it's my ISP who's bouncing the message.
>
> It looks as though they did reject the mail. I asked them please to let it
> through just this once, and now it's sitting on their server (my ISP's).
> Unfortunately, my local postfix is rejecting it because it's over "a fixed
> limit". I tried turning up the two likely-looking limits in /etc/postfix/
> bounce.cf.default, but that just removed the error message - the mail
> remained at my ISP.
>
> What else can I try?
>
> I use fetchmail to collect the POP3 mail and forward it to postfix for
> dovecot to serve as SMTP. This is the first trouble I've had with it and
> external mail.
If you want to try an old school approach, but with a more modern encryption
method, you could try 'openssl s_client' and then list messages and retrieve
the one you're interested in. Something like this:
openssl s_client -connect pop.some_server.com:995 -crlf -starttls pop3
then use server commands[1] as you would over a telnet connection, e.g.
USER peter
PASS s3cr3tPa77
STAT
LIST
RETR 5
DELE 5
QUIT
The TOP command may also be useful if you wish to only check the top few lines
of a (large) message to decide if you want to retrieve the rest of it.
TOP 5 10
Or if your ISP offer a webmail front end to their server, it should be easier
to access the message with a browser.
[1] https://www.ietf.org/rfc/rfc1939.txt
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