не уходят письма через smtp connector
 

добрый день! столкнулся со следующей проблемой, не уходят письма на адреса в домене gmail.com, они повисают в очереди. После таймаута приходит отчет (**Не удалось доставить сообщение в указанные временные рамки. Повторите попытку или обратитесь к администратору. **<domain.com #4.4.7> )
На все остальные домены, к примеру mail.ru письма уходят моментально и без ошибок. Exchange 2003.
вот лог smtp diag:
C:\Program Files\Support Tools>C:\smtp\SmtpDiag\smtpdiag m.shagivaleev@2wings.lo
cal dogidogi48@gmail.com

Searching for Exchange external DNS settings.
Computer name is EX.
VSI 1 has the following external DNS servers:
109.195.1.1,109.195.0.1

Checking SOA for gmail.com.
Checking external DNS servers.
Checking internal DNS servers.
SOA serial number match: Passed.

Checking local domain records.
Checking MX records using TCP: 2wings.local.
Checking MX records using UDP: 2wings.local.
Both TCP and UDP queries succeeded. Local DNS test passed.

Checking remote domain records.
Checking MX records using TCP: gmail.com.
Checking MX records using UDP: gmail.com.
Both TCP and UDP queries succeeded. Remote DNS test passed.

Checking MX servers listed for dogidogi48@gmail.com.
Connecting to gmail-smtp-in.l.google.com [173.194.71.26] on port 25.
Successfully connected to gmail-smtp-in.l.google.com.
Connecting to alt1.gmail-smtp-in.l.google.com [173.194.64.27] on port 25.
Successfully connected to alt1.gmail-smtp-in.l.google.com.
Connecting to alt2.gmail-smtp-in.l.google.com [74.125.142.26] on port 25.
Successfully connected to alt2.gmail-smtp-in.l.google.com.
Connecting to alt3.gmail-smtp-in.l.google.com [74.125.134.27] on port 25.
Successfully connected to alt3.gmail-smtp-in.l.google.com.
Connecting to alt4.gmail-smtp-in.l.google.com [173.194.74.26] on port 25.
Successfully connected to alt4.gmail-smtp-in.l.google.com.

C:\Program Files\Support Tools>