Posts Tagged: exim

Testing SMTP AUTH PLAIN Over TLS

TLS SMTP connection

To prepare to test a TLS connection to an SMTP server we first need to Base64 encode the Login credentials: perl -MMIME::Base64 -e ‘print encode_base64(“\000LoginID\000password”)’ The result of this is: AExvZ2luSUQAcGFzc3dvcmQ= I tried using the base64 linux command but did not get the same result or a result that would work: echo -n “\000LoginID\000password” |… Read more »

Exim Troubleshooting

We had a bit of difficulty yesterday with LDAP / Active Directory authentication within Exim. Sending mail via SMTP with authentication was timing out and it looked like a TLS error. 2013-10-01 14:39:12 [17013] TLS error on connection from blahblahblah (ehloname) [192.168.1.3]:52031 I=[192.168.6.51]:587 (SSL_accept): error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol We got to the bottom of the problem… Read more »