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TLS errors when receiving from outlook.com

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TLS errors when receiving from outlook.com

Simon Matthews
I see the following lines in my logs:
Apr 26 20:53:30 xenvps postfix/smtpd[19000]: connect from
mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]
Apr 26 20:53:30 xenvps postfix/smtpd[19000]: setting up TLS connection
from mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]
Apr 26 20:53:30 xenvps postfix/smtpd[19000]: SSL_accept error from
mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]: -1
Apr 26 20:53:30 xenvps postfix/smtpd[19000]: lost connection after
STARTTLS from mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]
Apr 26 20:53:30 xenvps postfix/smtpd[19000]: disconnect from
mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]

It looks like some kind of problem negotiating  TLS, but other sites
can send me email using TLS  with no problems. I am using a
self-signed certificate.

Any ideas what is wrong and how to fix it?
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Re: TLS errors when receiving from outlook.com

Noel Jones-2
On 4/26/2017 11:00 PM, Simon Matthews wrote:

> I see the following lines in my logs:
> Apr 26 20:53:30 xenvps postfix/smtpd[19000]: connect from
> mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]
> Apr 26 20:53:30 xenvps postfix/smtpd[19000]: setting up TLS connection
> from mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]
> Apr 26 20:53:30 xenvps postfix/smtpd[19000]: SSL_accept error from
> mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]: -1
> Apr 26 20:53:30 xenvps postfix/smtpd[19000]: lost connection after
> STARTTLS from mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]
> Apr 26 20:53:30 xenvps postfix/smtpd[19000]: disconnect from
> mail-sn1nam01on0125.outbound.protection.outlook.com[104.47.32.125]
>
> It looks like some kind of problem negotiating  TLS, but other sites
> can send me email using TLS  with no problems. I am using a
> self-signed certificate.
>
> Any ideas what is wrong and how to fix it?
>


A self-signed certificate should not cause problems.  TLS problems
often happen when one gets too creative with the TLS settings in
postfix. Try putting the cipher and protocol settings back to their
default.

If you need more help, please see:
http://www.postfix.org/DEBUG_README.html#mail



  -- Noel Jones
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Re: TLS errors when receiving from outlook.com

Viktor Dukhovni
On Thu, Apr 27, 2017 at 10:06:49AM -0500, Noel Jones wrote:

> > It looks like some kind of problem negotiating  TLS, but other sites
> > can send me email using TLS  with no problems. I am using a
> > self-signed certificate.
> >
> > Any ideas what is wrong and how to fix it?
>
> A self-signed certificate should not cause problems.  TLS problems
> often happen when one gets too creative with the TLS settings in
> postfix. Try putting the cipher and protocol settings back to their
> default.

However, http://postfix.1071664.n5.nabble.com/Problems-with-incoming-mails-from-outlook-com-td78356.html#a78374

--
        Viktor.
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