mail server tidak bisa kirim atau terima pesan


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M.SoniGumilar

Beginner 2.0
selamat siangg,,

saya mempunya mail server menggunakan platform rouncube tetapi tidak bisa menerima dan mengirim email dari, ke luar kecuali lokal. dimana letak masalah ini ? berikut pesan kegagalan mengirim ke GMAIL.

This is the mail system at host mail.unsera.ac.id.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<[email protected]>: connect to
alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out
Reporting-MTA: dns; mail.unsera.ac.id
X-Postfix-Queue-ID: A268A2E0F25
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Mon, 29 May 2017 13:21:23 +0700 (WIB)

Final-Recipient: rfc822; [email protected]
Action: failed
Status: 4.4.1
Diagnostic-Code: X-Postfix; connect to
alt4.gmail-smtp-in.l.google.com[173.194.219.26]:25: Connection timed out
 

M.SoniGumilar

Beginner 2.0
iyya smtp nya gmail om @hendranata , yang saya herankan sudah saya cek smtp nya bagus tapi belum bisa kirim atau nerima pesan dari gmail maupun yahoo.. salah dimananya yaa ?
 

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natanetwork

Hosting Guru
Verified Provider

GPLHosting

Hosting Guru
smtp check -> OK (not mailrelay)
rDNS -> OK
SPF -> OK

BL -> Blacklisted in several Spam BL provider.

test smtp ok, tapi koneksi ke google mail time out. ada 2 kemungkinan:

1. masalah routing di koneksi ISP nya
2. karena ter-blacklist.
 
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