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Cannot send email Donny
    Cannot send email Synametrics Support
        Cannot send email Donny
            Cannot send email Synametrics Support

From: Donny
Date: 9/10/19 2:32 AM
Topic: Cannot send email
Type: General Discussions
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Hello anybody,

anyone ever have trouble sending email using Xeams. So I sent email from my mail account from Xeams to google account. But message cannot delivered to gmail account.

If i look into logs/OutboundAuditTrailFailure.log there is error message said that Xeams cannot sent email to 64.233.177.27 ......[Failure reason: No server listening on port 25].

The error message same like that for every domain i want to send email to. Yahoo, etc

Note: Inbound & Outbound check on Xeams all green

 

 

 
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From: Synametrics Support
Date: 9/10/19 10:37 AM
Topic: Cannot send email
Type: General Discussions
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This could happen if:

  • Outbound port 25 is blocked either by your firewall (unlikely) or by your ISP. Are you using Xeams behind a static or dynamic IP. Note that if you have a dynamic IP address issued by your ISP, it is very likely they have blocked port 25. Most ISPs do not allow running an email server if you get a dynamic IP from them.
  • Your IP address is blocked by the receiving end, which could happen if Google gets many junk messages from it.

Try opening a telnet session to Google's SMTP server. Use the following command:

telnet gmail-smtp-in.l.google.com 25

If you see an SMTP banner, connection is established. If not, something is blocking the connection.
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From: Donny
Date: 9/12/19 2:04 AM
Topic: Cannot send email
Type: General Discussions
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Hi,

Gmail SMTP doesn't greet me:

telnet gmail-smtp-in.l.google.com 25
Trying 74.125.24.27...
Connected to gmail-smtp-in.l.google.com.
Escape character is '^]'.
EHLO mx.mydomain.com
452 syntax error (connecting)

About more than 24 hours most of queued mail will be sent at once. Than another outgoing mails will be queued again. We can send email without queue on several domains. But on gmail and yahoo the emails will be queued first. What should I do to solve this issue? The mail server worked almost a month but previously we haven't setup public certificate, DKIM, SPF, DMARC and reverse DNS. Two days ago we setup all of them. But the mails to google still got queued for long time before sending. Thanks.

 
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From: Synametrics Support
Date: 9/12/19 7:52 AM
Topic: Cannot send email
Type: General Discussions
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Try using Email Sender (https://xeams.com/email-sender.htm) to send messages to gmail.com. Put gmail-smtp-in.l.google.com in the host name for the SMTP server. See what step does the connection fails.

If it fails right away, or before the MAIL FROM command, the problem is NOT related to your DKIM.

If it fails right after MAIL FROM, it could be related to SPF

If it fails after DATA, Google is parsing your email and is deciding to reject. There is very little you can do on your end besides sending an email to Google's support and ask them why they don't like your email.
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