Comments on: How to Install Postfix on CentOS/RHEL 7/6/5

By: Prashant Jaiswal

Prashant Jaiswal — Mon, 09 Aug 2021 17:33:35 +0000

totally not helpful. Completely vague and unclear solution. Left too much.

By: Shazeb ICT

Shazeb ICT — Thu, 11 Mar 2021 05:04:40 +0000

In reply to Pratik. The above information is very helpful. Thanks, Pratik We know computer issues can happen at any time. That's why we provide a 24-hour emergency IT support service. If you need us to resolve a frustrating IT issue after hours just call us and you will be working again in no time.

By: Daniel

Daniel — Thu, 25 Jul 2019 08:15:48 +0000

In reply to Pratik. If you're still having issues setting up Postfix please send me an email at daniel@mail.lightning-vps.com This article is very vague and completely not helpful to beginners. Personnaly i would suggest to use PostgreSQL as a Database backend over MySQL. feel free to email me if you or anyone else is having trouble setting up an email server

By: Pratik

Pratik — Mon, 15 Jul 2019 08:30:29 +0000

Hi,

I am not sure how many of the readers were successfully able to get the Postfix started sending emails…

I followed all the steps of the article. When I try sending test mail, I get following error in the /var/log/maillog

Jul 15 12:08:46 mumsrv-qe postfix/pickup[28935]: CD221181C6E: uid=0 from=
Jul 15 12:08:46 mumsrv-qe postfix/cleanup[30412]: CD221181C6E: message-id=
Jul 15 12:08:46 mumsrv-qe postfix/qmgr[28936]: CD221181C6E: from=, size=479, nrcpt=1 (queue active)

Jul 15 12:09:28 mumsrv-qe postfix/smtp[30414]: CD221181C6E: to=, relay=mobileum.com[217.78.11.57]:25, delay=42, delays=0.11/0.01/21/21, dsn=5.0.0, status=bounced (host mobileum.com[217.78.11.57] said: 550-Please turn on SMTP Authentication in your mail client. 550-(mumsrv-qe.mobileum.com) [114.143.191.38]:43898 is not permitted to relay 550 through this server without authentication. (in reply to RCPT TO command))
Jul 15 12:09:28 mumsrv-qe postfix/cleanup[30412]: 6DAE3181C88: message-id=
Jul 15 12:09:28 mumsrv-qe postfix/bounce[30494]: CD221181C6E: sender non-delivery notification: 6DAE3181C88
Jul 15 12:09:28 mumsrv-qe postfix/qmgr[28936]: 6DAE3181C88: from=, size=2718, nrcpt=1 (queue active)
Jul 15 12:09:28 mumsrv-qe postfix/qmgr[28936]: CD221181C6E: removed

I am not sure what is missing!
Someone please help

By: Ardiansyah

Ardiansyah — Mon, 08 Jul 2019 08:00:45 +0000

Thank For Yourt Information its very useful for me as a beginner

By: Jason

Jason — Tue, 25 Jun 2019 04:52:41 +0000

In Redhat 8 at least (and probably every other version/flavor), specifying a Subnet like l27.0.0.0/8, 32 will conflict with the earlier inet_interfaces=all statement. Can’t have both. Best to recomment the subnet line.

Also, this article is woefully short and inadequate. You should thoroughly configure and test Postfix before making it your MTA. If you’re gonna go to the trouble of writing a config article, do it right ffs

By: Blazho Dzurovski

Blazho Dzurovski — Sat, 07 Jul 2018 23:40:54 +0000

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By: psd2 api

psd2 api — Sun, 11 Feb 2018 09:08:33 +0000

Excellent. It works!

By: preeti

preeti — Mon, 11 Jul 2016 13:38:03 +0000

rcpt to:
550 5.1.1 : Recipient address rejected: User unknown in local recipient table
i receive above error please help to find out

By: P

Tue, 18 Aug 2015 11:05:01 +0000

In reply to kazuya. Is that all you noticed here Kazuya??