c# - NLog Mail target timeouts -


i'm trying use nlog's mail target send emails through secured (ssl) smtp server. here configuration:

<target type="mail"         name="mailtarget"         layout="${message}"         encoding="utf-8"         html="false"         addnewlines="false"         subject="hi8766"         to="ben.g@mycompany.com"         from="ben.g@mycompany.com"         body="${message}"         smtpusername="ben.g"         enablessl="true"         smtppassword="12345"         smtpauthentication="basic"         smtpserver="smtp.mycompany.com"         smtpport="465"         deliverymethod ="network"         pickupdirectorylocation=""         timeout="20000"/>

however when use logger.info(message)nothing happens. turned on nlog's internal logging on , started wireshark, on internal logs see: 

2016-02-05 10:46:54.3968 debug sending mail ben.g@mycompany.com using smtp.mycompany.net.il:465 (ssl=true) 2016-02-05 10:47:14.4526 error system.net.mail.smtpexception: operation has timed out.    @ system.net.mail.smtpclient.send(mailmessage message)    @ nlog.internal.mysmtpclient.nlog.internal.ismtpclient.send(mailmessage )    @ nlog.targets.mailtarget.processsinglemailmessage(list`1 events)

the thing can see syn-syn/ack-ack transmission ssl negotiation doesn't start , stops untill fin client. weird because have compared network behavior outlook on same setting , ssl start , works fine , email sent.

this .net bug, described at: http://blogs.msdn.com/b/webdav_101/archive/2008/06/02/system-net-mail-with-ssl-to-authenticate-against-port-465.aspx

tl;dr: ssl + port 465 (implicit ssl) not supported in .net. can use ssl + port 25 (explicit ssl)

there github issue this. if can build workarounds in nlog this, let know.


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