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Postfix mailserver config fix

We have a problem with our mail system. We are running an Centos 5.2 server with Postfix, spamassassin, dovecot with virtual domains and users configured with Mysql and postfixadmin.

Yesterday we started getting errors from our outgoing smtp server:

The following recipient(s) cannot be reached:

'SmartMedia | Jóhann Guðmundsson' on [url removed, login to view] 08:00

554 5.7.1 This message has been blocked because the HELO/EHLO domain is invalid.

We need this fixed ASAP.

Kemahiran: Linux, Sistem Admin

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Tentang Majikan:
( 12 ulasan ) Vestmannaeyjar, Iceland

ID Projek: #363894

Dianugerahkan kepada:

minus273

Hello, I'm an experienced systems/network administrator and can help you with this immediately. Please, do check PMB. Thanks.

$30 USD dalam sehari
(12 Ulasan)
4.4

7 pekerja bebas membida secara purata $51 untuk pekerjaan ini

yunusyb

ready to finish right now.

$30 USD dalam 0 hari
(164 Ulasan)
6.3
marpada

Experienced Linux sysadmin. Ready to start!

$30 USD dalam 0 hari
(24 Ulasan)
4.2
solwolf

Let me fix it. Please see PMB.

$40 USD dalam 0 hari
(2 Ulasan)
2.9
leave

Hi. An experienced Linux administrator ready to fix the issue within 15 minutes during next 2 hours. Have great experience with Postfix.

$30 USD dalam 0 hari
(6 Ulasan)
2.8
jonez734

Your problem is probably that the hostname for the machine is not in the public DNS. I can help if you need it.

$50 USD dalam sehari
(1 Ulasan)
1.5
khotabhijit

I have worked as sendmail CPE engineer for HP-UX and on the core development team on Oracle collaboration suite. I can fix this issue within 1 business day.

$150 USD dalam sehari
(0 Ulasan)
0.0