I've not been having any luck at all finding the answer to this, so thought I'd ask here: is there any way to get my servers to send an email when someone logs in through SFTP? I was able to get that to work with SSH using a simple bit of script in /etc/profile, but I can't find anything on Google about doing that with SFTP at all.

The OpenSSH version on my server is 5.2p1 running on FreeBSD 8.0. Any way to get the server to execute any command on SFTP login will be enough for me to get this set up.

Any help is very much appreciated.

Monitor the log and send mail on new connections.

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...............you know what? As much of a pain as that sounds like it could be, I think it is probably dead on. I'll give that a try...thank you!

I don't know why I didn't think to try that...

I don’t know whether it will work on FreeBSD: what about using pam_warn to write a line to the syslogd, and the log daemon will send an email for this specific application (sftp) in this case. In Linux the syslog-ng has also a "program" destination (instead of just writing it to a file) for the message which is feed to it. The program destination could be a loop reading the actual line and send it out.