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The first is the key
' Connection timed out with mx2.recipient.com.'.
You need to check this, maybe by talking to the Admin of that box and/or try telnet by hand to port 25 on that box; can you reach it it and does it have a listening MTA on port 25.
Incidentally, this ' relay=xx.xx.xx.xx.static-pune.hostin.in [xx.xx.xx.xx] (may be forged)' is not really good either, but may not be fatal.
I tried telnetting to recipient domain it refused message.
telnet mx2.recipient.com 25
Trying 14.140.233.75...
Connected to mx2.recipient.com.
Escape character is '^]'.
220 EXGWSRV102.recipient.co.in Microsoft ESMTP MAIL Service, Version: 6.0.3790.4675 ready at Thu, 18 Apr 2013 09:41:27 +0530
ehlo
250-EXGWSRV102.recipient.co.in Hello [xx.xx.xx.xx]
250-TURN
250-SIZE
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250-X-EXPS GSSAPI NTLM LOGIN
250-X-EXPS=LOGIN
250-AUTH GSSAPI NTLM LOGIN
250-AUTH=LOGIN
250-X-LINK2STATE
250-XEXCH50
250 OK
mail from:sender@domain.com
250 2.1.0 sender@domain.com....Sender OK
rcpt to:recipient@domain.com
250 2.1.5 recipient@domain.com
data
354 Start mail input; end with <CRLF>.<CRLF>
subject:test email
test
.
550 5.7.1 Requested action not taken: message refused
Connection closed by foreign host.
This "relay=xx.xx.xx.xx.static-pune.hostin.in [xx.xx.xx.xx]" is our
shared hosting email server there are lot of client on it not having any problem
while sending/receiving emails.
You need to talk to the admin of that server mx2.recipient.com. He can watch the logs while you try to do that.
He should know anyway; looks like your local system is not an acceptable system for them.
Re other problem; you should try to get to the bottom of that also. It may(?) not seem to be causing a problem right now, but in the long run it may come back to bite you.
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