Questions tagged [smtp]

Simple Mail Transfer Protocol. A protocol for delivering e-mail from an end user to a server for storage and later retrieval by the intended recipient.

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How to send emails with Thunderbird without revealing my internal and external IP address?

I have noticed this issue while using Google's Gmail with Thunderbird. When I send an email from Gmail's web front end at https://mail.google.com/ my internal and external IP address are not included ...
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110 views

Does user need to keep updated with the certificates locally when using TLS with smtp?

https://wjianz.wordpress.com/2014/09/03/howto-installconfigure-msmtp-and-mutt-on-ubuntu/ I got GTS CA 1O1 as the common name instead of Google Internet Authority G2. What is the difference between ...
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I want to know if exist a vulnerability in using sp_send_dbmail of SQL Server?

I'm using the next stored procedure sp_send_dbmail in SQL Server 2012, the DBA ask me if it possible make SQL Injection using this SP, or SMTP Injection? In the configuration of the Database ...
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How to exploit TELNET?

I was playing around on my website and was trying to hack it. I read an article about telnet the article said to test telnet hostname/ipaddress port. I used this and I got this back: Trying 103.211....
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Suspicious SMTP server client activity - non-ASCII queries

I've noticed some strange activities from some remote host connected to our SMTP mail server. Queries contains non-ASCII characters, below is the copy of one of them (to each query our server ...
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130 views

Database in DMZ and SMTP relay

I have an application that talks with a database in the DMZ. There is a firewall between the apps and the db but our developer thought that they require a mail notification that is triggered from the ...
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220 views

simple question about smtp server ( msa to mta ) security design?

Not sure if this is due to security; hence the reason i am asking here. I have 2 SMTP server and a couple of unix servers the actual mailserver running on window. client connect to it and download ...
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582 views

“SMTP AUTH extension not supported by server” with setoolkit

In order to test pishing attacks with setoolkit (Social Engineering Toolkit), I installed iRedMail in my local network. I created two account: attacker@hackme.clubhacking.org hackme@hackme....
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344 views

script for analysis of tcpdump log file

I'm trying to get the following metrics from my tcpdump log file: (1) one-way delay, (2) request/response delay, (3) packet loss, (4) overall transaction duration and (5) delay variation (jitter). ...
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752 views

How do Bots Spam Where Outgoing SMTP is blocked

I have read,that bots in an internal network talk directly to External Mail servers instead of going through the Internal Mailserver to deliver spam. Query If it's true, than how do Bots spam do so ...