Simple Mail Transfer Protocol is the protocol used for sending email.

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17
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12answers
20k views

How to prove that an email has been sent?

I have a dispute on my hands in which the other party (landlord's real estate agent) dishonestly claims to not have received an email that I truly did send. My questions is, what are the ways to ...
1
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3answers
3k views

Implementing a SMTP server on a personal computer (windows)

I need a very simple SMTP server running on my computer for notification software that I developed. I tried "Free SMTP SERVER" and "QK SMTP SERVER 3", but for some reason they don't work, they always ...
-1
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2answers
441 views

SMTP server service? [closed]

I'm looking for a good SMTP host. I need to be able to: Send as much as 25000 emails per day. Connect to the smtp server from ONLY one IP Basically, my host has a 500 email per hour limit. And the ...
111
votes
7answers
5k views

Why can't I email myself at: MyEmail@74.125.235.55?

I opened cmd and typed ping gmail.com. It shows me: C:\Windows\system32>ping gmail.com Pinging gmail.com [74.125.235.55] with 32 bytes of data: Reply from 74.125.235.55: bytes=32 time=6ms TTL=56 ...
1
vote
3answers
140 views

How reliable is the “from” header in an email?

When I get an email from john@example.com, how certain can I be that it is actually from him? If the SMTP "from" header is john@example.com it is possible that it could be spoofed. Can DKIM, SPF, or ...
0
votes
3answers
3k views

Settings to send an email from localhost for PHP code in Windows Vista

I am using PHP 5 and Apache to do programming. My code can correctly send emails on the server, but on my own development machine I cannot send emails. There is clearly nothing wrong with my code, so ...
4
votes
1answer
3k views

Suddenly can't send E-Mails with Apple Mail to Gmail SMTP

I have a weird problem that started just today. I am using Apple Mail on a Leopard machine, connecting to Gmail. Fetching e-mail works just fine. My SMTP settings are also correct. Still, I can't send ...
3
votes
5answers
10k views

How can I find a computer on my network that is doing mass mailings?

I was notified by my isp that one of my machines is sending out spam. This happened about 3 months ago on windows machine running cygwin that was hacked due to an SSH vuln. The hackers setup IIS and ...
3
votes
1answer
4k views

View full message headers from a .msg file in Outlook 2007

I've got an Outlook 2007 email message saved as a .msg file. How do I view the full SMTP headers from this message? http://superuser.com/questions/78035/outlook-2003-email-headers is helpful, but ...
1
vote
1answer
459 views

Postfix allows unauthenticated users to send emails

Hey I set up Postfix to use cyrus SASL implantation and I'm able to login and send emails, but I can still telnet on port 25 and send mails even if I'm not authenticated, which I whish to deny. ...
1
vote
1answer
561 views

Cannot send email through SMTP in Thunderbird

I have a school provided email (name@ins.edu) that is located on an outlook server (pod#####.outlook.com) that I configured in Thunderbird using the settings provided by the web-based outlook ...
1
vote
3answers
1k views

Secure email sending with Thunderbird?

In the Thunderbird 3 SMTP configuration dialog, there's a security section: If I want to send email without naughty hackers intercepting it, what should I choose? The "Connection security" options ...
0
votes
1answer
468 views

How To Upgrade Pear To Send Email With Smtp send() Function In PHP

I want to send e-mail on ubuntu 14.04 with smtp php. But I can't send e-mail because smtp-->send function doesn't work. So that I decided to install pear mail packages. But when ı want to install php ...
0
votes
2answers
503 views

550 User Unknown cmd telnet error (Email spoofing)

I'm trying to send email using telnet in cmd. I have connection with telnet now. Btw I'm using a disposable email provider. C:\Users\Student>telnet mail.dispostable.com 25 then it brought me ...