Lindsay Haisley writes:

I'm running a Gentoo Linux server with Courier 0.60.0 installed and
running.  One of my customers, who's using the box for outgoing SMTP, is
reporting problems sending to a correspondent and is receiving a "sslv3
alert handshake failure" DSN when sending to one of their customers.

I've had this problem before and can exempt my customer's correspondent
from STARTTLS in esmtpdroutes by setting /SECURITY=NONE.  Researching
this, though, I came across

http://www.mail-archive.com/[email protected]/msg32754.html

and note that this may be avoided altogether by proper setting of
TLS_PROTOCOL in the esmtpd-tls config file (do I need to set this in
esmtpd as well?).  Currently TLS_PROTOCOL is set to "SSL23" in all files
relating to SSL/TLS security.

esmtpd-tls is for incoming mail. For outgoing mail, there are equivalent settings in the courierd config file.

What should this setting be for this version of Courier?

Should also be SSL23.

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