Home / server / Questions / 233103
In Process
Stann
Asked: 2011-02-09 20:33:58 +0800 CST

How to check what features mail server supports?

  • 772

just curious if there any tool that I can just give a mail server address/ip to and that would give me all features that mail server supports.

Like: does it support imap/pop3? Does it support tls/ssl/ntlm encryption? etc....

thanks:)

ssl email-server tls

1 Answers

  1. Services can usually be determined by a quick port scan, but this can (and should) trigger any decent IDS into shutting you out of the network completely.

    For checking the authentication methods, a simple EHLO should list the relevant details:

    C:\Users\mark.henderson>telnet enetsxs1 25

220 enetsxs1.com.au Microsoft ESMTP MAIL Service ready at Wed, 9 Feb 2011 15:42:09
+1100
ehlo
250-enetsxs1.com.au Hello [192.168.161.140]
250-SIZE 10485760
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-AUTH NTLM LOGIN
250-8BITMIME
250-BINARYMIME
250 CHUNKING
    • 3