Using sendmail 8.14.5 to solve issue with ISP.
 

Hi: Not entirely true, running sendmail under BusyBox 1.21.1, so busybox will see to the details and I'll have a minimal set of commands. And I can always run the very sendmail if necessary. What happens with this ISP? They don't give advice on any O.S. They tell me: "The connection is OK from this side up to your DHCP modem. Your side is a thing of yours". It's POP3/SMTP. They tell me my username is the same as my URL. All right.

The setup I think is identical to that of my previous ISP, which I used with SeaMonkey 2.12.1 (SeaMonkey Mail). Here, I used to use:

(a) Connection security: none
(b) Authentication method: password, transmited insecurely

for both directions, in and out and everything went well. I think the new ISP does not care more than the old about security, but I may be wrong. In that case, trying with all the combinations of (a) and (b) would be easier with sendmail, and the error messages more concise and I would not be pressing the mouse buttons 30 times a minute.

However it may be the other way around and seamonkey a more convinient tool to use, for instance if it could query the ISP and fill in those fields automatically. What do you think?

I do not see a question here. The topic is "using sendmail 8.14.5 to solve issue with ISP" but then you want us to tell you if you can keep using Seamonkkey mail?
Sendmail is a MTA, Seamonkey is a MUA. The two bear no relation. The remainder of your text basically bears no meaningful sentence.

Please explain what you are running into and what needs to be fixed or solved, or exemplified.

Eric

Wait a moment, if you please. Let's stick to sendmail and, please, let only people knowing sendmail post.

Problem: cannot make my usual mail client to establish a connection with the outside world.

Question: how can sendmail help me to establish it?

I've read the manual of course and have issued this command: The exact meaning of this message would be another question, but... well, isn't 127.0.0.1 for loopbacking? Accordingly I'm trying to send a message to myself?

Apparently you are using the "sendmail" applet of busybox. That is not the same as the sendmail MTA which comes with Slackware and which gets its configuration from the files in /etc/mail.
In particular, the "sendmail" applet of busybox needs a "-S" parameter to tell it which server you want to talk to.

Eric

That's good! I'd already noticed -S HOST[:PORT] in the syntax but couldn't figure out the meaning of HOST. Does this give an answer?So I'll use /usr/bin/sendmail. Hummm... I will try to learn a little bit from the internet or a system admin guide. Google gave me my public IP address, I used it in option -S and could begin to type in the console. Only I pressed then ^D and did not stop, a tiny detail.

TLA Holiday
 

Perhaps Alien meant something more, like http://catb.org/~esr/faqs/smart-questions.html?
TL;DNR? see bold part at the end.
Many times I'll solve a problem by presenting myself the question, and then carefully describe the steps to reproduce it before I post. PEBKAC rules.
HTH, HAND

Look, if you fail to see that "-S HOST:PORT (Server)" means that you have to supply the SMTP server there, why are you bothering at all with busybox?
And I wonder where you got the idea that Sendmail (the MTA) is useful for reading emails? You can _send_ an email from the commandline with a bit of trouble and a good understanding of the SMTP protocol, but when SMTP AUTH comes to play, you'll have to know even more of the SMTP inner workings.

Perhaps you are getting confused with the fetchmail program? That program can fetch emails from your ISP and deliver them to a local mailbox, which you could then read using Seamonkey, or pine, or mitt, or even vi.

Yet I fail to see why you don't just stick with Seamonkey Mail, or even switch to Thunderbird which can figure out the required connection parameters automatically.

Eric

Sir, let's begin by the end. Each person uses this or the other program to communicate via email in the GUI. So, if I say I use seamonkey, my chances to get an answer are few. More importantly, these programs are infinitely complicated as compared with the basic Linux command to accomplish that: sendmail.

The number of parameters to supply is minimal, once I know the proper ones I can use them once and again, and learn in the process. If you wonder about busybox, please forget about it for a while, though it makes operation much simpler, hidding the subtelties of the process to the would-be user. These are my reasons.

But I see these are not enough reasons. I have used Seamonkey mail for over three years, and suddenly my new ISP makes it usesless. Did you read post #1?

So sendmail (mailx?) is simple and Seamonkey's not working with new ISP. I'd really like to meet them, they're sure the weirdest one in the business.

Granted.

Absolutely, and in that post you do not tell what is wrong with your ISP, you do not show us what errors you are getting when trying to get Seamonkey to connect to your ISP, and do not tell us if you even know the ISP's hostname to be used for the POP3 and SMTP servers.

Eric

OK, don't worry. I just installed 12.0 just to make certain the new ISP and Seamonkey don't come to terms, and now I can tell you neither Win98 nor Win7 can avoid trouble with it. I'd be ready to provide all needed information had I not installed the Sendmail mail server (rc.sendmail) when the installer asked me. Every other thing I did as I did a hundred times before. The thing is that avoids trying with seamonkey/12.0, but I'm about to boot and run the utility, whose name I cannot remember now, to install/uninstall those services or the directory involved. I mean, I can always do it with the installation disk. Concision is not my virtue.

12.0 can't connect to the ISP. This is from dmesg: which later gives Sorry to bring a secondary problem here, but what can be possibly happening?

The driver, r8169 is up and running, as can be seen in the 1st block, first line. I attach the whole dmesg outtput and two other files.

EDIT: this goes too far. The machine is too new for 12.0 which lacks the drivers for the realtek 8169. So lets put and end to the digression and let's go back to 14.0 and Seamonkey running on it.

Seamonkey 2.12.1
Xfce 4.10
Slackware 14.0

Trying to access in mail. Seamonkey asks for my password, I enter it and he notifies:Trying to send mail out. Seamonkey notifies:Just two examples. I have, however just spoken with the company, which assures me the username and password are the ones producing Seamonkey's error notification. And of course, the POP3 and SMTP hostnames I've asked the company and are those I use in Seamonkey.

I let Thunderbird test that email server infrastructure and come up with working parameters.

This is what it got:
SMTP server: smtp.telecentro.com.ar (no encryption)
POP3 server: pop.telecentro.com.ar (no encryption)
IMAP server: imap.telecentro.com.ar (STARTTLS for encryption)

All these hostnames resolve to the same IP as the two hostnames tcsmtp.telecentro.com.ar and tcpop.telecentro.com.ar that you are using, so that looks good.

What port is Seamonkey Mail using to talk to the SMTP server? Should be port 25 for unencrypted connections. For POP3 it should be using port 110. These connections do indeed seem to require a username/password. If the password error keeps coming up, try changing your connection to an encrypted one (SSL or better, STARTTLS). The server port changes too, in that case.

Eric