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temurim

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My mail server hostname is a mail.abc-pharm.com and it is written in domain section. but EHLO do not shows (It must be EHLO mail.abc-pharm.com).
PTR record is correct. And mail server is insaid nat. (mikrotik router, dnsnat 25, 110 port on 192.168.XXX.XXX)

Halp me please solve this problem

telnet command:
220 mail.abc-pharm.com Kerio Connect 8.3.1 ESMTP ready
ehlo mail.abc-pharm.com
250-mail.abc-pharm.com
250-AUTH CRAM-MD5 PLAIN LOGIN DIGEST-MD5 NTLM
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-PIPELINING
250-ETRN
250-DSN
250 HELP

This is a debug.

[07/Nov/2014 19:54:42][1824] {smtpc} Sending EHLO
[07/Nov/2014 19:54:42][1824] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:54:42][1824] {smtpc} Sending email to SMTP server mta6.am0.yahoodns.net, delivering mail from <m.orjonikidze<_at_>abc-pharm.com>
[07/Nov/2014 19:54:42][1824] {smtpc} Connecting to 66.196.118.36 (mta6.am0.yahoodns.net) using local interface 0.0.0.0...
[07/Nov/2014 19:54:42][1824] {smtpc} Connected to mta6.am0.yahoodns.net
[07/Nov/2014 19:54:44][5960] {smtpc} Received greeting: 220 mta1071.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:54:44][5960] {smtpc} Sending EHLO
[07/Nov/2014 19:54:44][5960] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:54:44][5960] {smtpc} Sending email to SMTP server mta6.am0.yahoodns.net, delivering mail from <t.badzgaradze<_at_>abc-pharm.com>
[07/Nov/2014 19:54:44][5960] {smtpc} Connecting to 66.196.118.36 (mta6.am0.yahoodns.net) using local interface 0.0.0.0...
[07/Nov/2014 19:54:44][5960] {smtpc} Connected to mta6.am0.yahoodns.net
[07/Nov/2014 19:54:56][4732] {smtpc} Received greeting: 220 mta1237.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:54:56][4732] {smtpc} Sending EHLO
[07/Nov/2014 19:54:56][4732] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:54:56][4732] {smtpc} Sending email to SMTP server mta7.am0.yahoodns.net, delivering mail from <j.dalakishvili<_at_>abc-pharm.com>
[07/Nov/2014 19:54:56][4732] {smtpc} Connecting to 66.196.118.33 (mta7.am0.yahoodns.net) using local interface 0.0.0.0...
[07/Nov/2014 19:54:57][4732] {smtpc} Connected to mta7.am0.yahoodns.net
[07/Nov/2014 19:54:59][5088] {smtpc} Received greeting: 220 mta1224.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:54:59][5088] {smtpc} Sending EHLO
[07/Nov/2014 19:54:59][5088] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:55:06][5328] {smtpc} Received greeting: 220 mta1291.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:55:06][5328] {smtpc} Sending EHLO
[07/Nov/2014 19:55:06][5328] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:55:06][5328] {smtpc} Sending email to SMTP server mta5.am0.yahoodns.net, delivering mail from <t.badzgaradze<_at_>abc-pharm.com>
[07/Nov/2014 19:55:06][5328] {smtpc} Connecting to 66.196.118.34 (mta5.am0.yahoodns.net) using local interface 0.0.0.0...
[07/Nov/2014 19:55:07][5328] {smtpc} Connected to mta5.am0.yahoodns.net
[07/Nov/2014 19:55:12][1824] {smtpc} Received greeting: 220 mta1202.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:55:12][1824] {smtpc} Sending EHLO
[07/Nov/2014 19:55:12][1824] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:55:12][1824] {smtpc} Sending email to SMTP server mta7.am0.yahoodns.net, delivering mail from <m.orjonikidze<_at_>abc-pharm.com>
[07/Nov/2014 19:55:12][1824] {smtpc} Connecting to 66.196.118.240 (mta7.am0.yahoodns.net) using local interface 0.0.0.0...
[07/Nov/2014 19:55:13][1824] {smtpc} Connected to mta7.am0.yahoodns.net
[07/Nov/2014 19:55:14][5960] {smtpc} Received greeting: 220 mta1265.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:55:14][5960] {smtpc} Sending EHLO
[07/Nov/2014 19:55:14][5960] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:55:14][5960] {smtpc} Sending email to SMTP server mta5.am0.yahoodns.net, delivering mail from <t.badzgaradze<_at_>abc-pharm.com>
[07/Nov/2014 19:55:14][5960] {smtpc} Connecting to 66.196.118.34 (mta5.am0.yahoodns.net) using local interface 0.0.0.0...
[07/Nov/2014 19:55:15][5960] {smtpc} Connected to mta5.am0.yahoodns.net
[07/Nov/2014 19:55:27][4732] {smtpc} Received greeting: 220 mta1021.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:55:27][4732] {smtpc} Sending EHLO
[07/Nov/2014 19:55:27][4732] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:55:37][5328] {smtpc} Received greeting: 220 mta1198.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:55:37][5328] {smtpc} Sending EHLO
[07/Nov/2014 19:55:37][5328] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:55:43][1824] {smtpc} Received greeting: 220 mta1534.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:55:43][1824] {smtpc} Sending EHLO
[07/Nov/2014 19:55:43][1824] {smtpc} Connection closed by remote host prematurely.
[07/Nov/2014 19:55:45][5960] {smtpc} Received greeting: 220 mta1171.mail.bf1.yahoo.com ESMTP ready
[07/Nov/2014 19:55:45][5960] {smtpc} Sending EHLO
[07/Nov/2014 19:55:45][5960] {smtpc} Connection closed by remote host prematurely.
  •  
temurim

Messages: 3

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And I'm not in blacklist and in greylist about 6 month
  •  
Pavel Dobry (Kerio)

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Yahoo obviously does not like hostname "mail.abc-pharm.com". You can contact them and ask for details. Also fixing your PTR may help. OR registering at Yahoo http://help.yahoo.com/l/us/yahoo/mail/postmaster/bulkv2.html

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  •  
ComputerBudda

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Well your reverse DnS isn't setup and you don't support TLS
  •  
temurim

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you don't support TLS

when I sens to other mail server it works normaly, there is debug:

{smtps} Successfully switched to TLS mode
[08/Nov/2014 10:04:06][3592] {smtps} Command EHLO www17.proservice.ge
[08/Nov/2014 10:04:06][3592] {smtps} Sent reply to EHLO: 250 mail.abc-pharm.com ...

Well your reverse DnS isn't setup and
Provider told "reverse dns is installed". but I'm not shure

Pavel Dobry ---
yahoo obviously does not like hostname "mail.abc-pharm.com"

but I have same problem with some mail servers.
accord-healthcare.com, cito-pharm.com, berlin-cheme.com.

Also, I today did test: short time i have moved mail server befoore nat. but problem steel had.
but problem
  •  
clan

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From what I can see your reverse DNS entry is ok, and your IP does not seem to be blacklisted. Yahoo may require using TLS for mail delivery, have you enabled it? The option is in the SMTP server settings on the SMTP delivery tab.
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