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Do you get this intermittently, or on every send?<br />
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Generally, I'd say if the mail is getting delivered, I wouldn't worry about it - it sounds like a broken client that doesn't terminate the session properly. &nbsp;My bet is that it's probably only one or two users causing all of those errors for you. &nbsp;Can you tie them to a sender?
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Do you get this intermittently, or on every send?

Generally, I'd say if the mail is getting delivered, I wouldn't worry about it - it sounds like a broken client that doesn't terminate the session properly.  My bet is that it's probably only one or two users causing all of those errors for you.  Can you tie them to a sender?

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When I send to gmail I get it. When I send inside my domain I don't.<br />
In my access file I put :<br />
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Try_TLS:&lt;MY DOMAIN&gt; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NO
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When I send to gmail I get it. When I send inside my domain I don't.
In my access file I put :

Try_TLS:<MY DOMAIN>       NO

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I don't have addcr in my CentOS &nbsp;6.0 distribution.
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I don't have addcr in my CentOS  6.0 distribution.

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This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.

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The mail arrives at the destination but I get a lot of STARTTLS=client, SSL_shutdown failed: -1. &nbsp;Can I ignore this error?
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The mail arrives at the destination but I get a lot of STARTTLS=client, SSL_shutdown failed: -1.  Can I ignore this error?

in sendmail log I get STARTTLS=client, SSL_shutdown failed: -1 should I be concerned?

An email client, email reader or more formally mail user agent (MUA) is a computer program used to access and manage a user's email. A web application that provides message management, composition, and reception functions is sometimes also considered an email client, but more commonly referred to as webmail.

Email Software

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.