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Fix eMail Server 451 4.3.5 Client host rejected: Server configuration error

I have a dedicated server that seems to have problems with its eMail configuration since I am no longer able to receive / send eMail.

I noticed that these files are hige in size - approx 7.5 Gb each:

var/log/[login to view URL]

/var/log/[login to view URL]

/var/log/[login to view URL]

I assume the server fails to flush them and they are growing too big too fast due to the misconfiguration / errors.

I'm posting some exceprts from the contents below.

The server should be properly configured to be able to send and receive eMail again.

You should be an expirienced server tech to solve this task. My Sever is not running Cpanel but ISP Config and is a Linux / Unix Server.

I look forward to working with yoz

var/log/[login to view URL]

Nov 3 06:31:28 srv01 postfix/smtpd[22371]: connect from unknown[[login to view URL]]

Nov 3 06:31:29 srv01 postfix/smtpd[22076]: timeout after AUTH from unknown[[login to view URL]]

Nov 3 06:31:29 srv01 postfix/smtpd[22076]: disconnect from unknown[[login to view URL]]

Nov 3 06:31:35 srv01 postfix/smtpd[22371]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

Nov 3 06:31:36 srv01 postfix/smtpd[22371]: disconnect from unknown[[login to view URL]]

Nov 3 06:31:36 srv01 postfix/smtpd[9539]: connect from unknown[[login to view URL]]

Nov 3 06:31:43 srv01 postfix/smtpd[9539]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

Nov 3 06:31:43 srv01 postfix/smtpd[9539]: disconnect from unknown[[login to view URL]]

Nov 3 06:31:46 srv01 postfix/smtpd[22076]: connect from unknown[[login to view URL]]

Nov 3 06:31:54 srv01 postfix/smtpd[22076]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

Nov 3 06:31:55 srv01 postfix/smtpd[22076]: lost connection after AUTH from unknown[[login to view URL]]

/var/log/[login to view URL]

Nov 3 06:31:35 srv01 postfix/smtpd[22371]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

Nov 3 06:31:43 srv01 postfix/smtpd[9539]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

Nov 3 06:31:54 srv01 postfix/smtpd[22076]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

Nov 3 06:32:13 srv01 postfix/smtpd[9539]: warning: connect to mysql server [login to view URL]: Access denied for user 'ispconfig'@'[login to view URL]' (using password: YES)

Nov 3 06:32:13 srv01 postfix/smtpd[9539]: warning: mysql:/etc/postfix/[login to view URL]: table lookup problem

Nov 3 06:32:25 srv01 postfix/smtpd[22371]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

Nov 3 06:32:45 srv01 postfix/smtpd[22076]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

Nov 3 06:33:19 srv01 postfix/smtpd[22371]: warning: connect to mysql server [login to view URL]: Access denied for user 'ispconfig'@'[login to view URL]' (using password: YES)

Nov 3 06:33:19 srv01 postfix/smtpd[22371]: warning: mysql:/etc/postfix/[login to view URL]: table lookup problem

Nov 3 06:33:46 srv01 postfix/smtpd[18848]: warning: unknown[[login to view URL]]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

/var/log/[login to view URL]

Nov 10 06:34:10 srv01 postfix/cleanup[1957]: warning: proxy:mysql:/etc/postfix/[login to view URL] lookup error for "web1@[login to view URL]"

Nov 10 06:34:10 srv01 postfix/cleanup[1957]: warning: 97F1F3961231: virtual_alias_maps map lookup problem for web1@[login to view URL] -- deferring delivery

Nov 10 06:34:10 srv01 postfix/error[1934]: 246993BE0CEB: to=<heiko7@[login to view URL]>, relay=none, delay=3707574, delays=3707574/0/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: lost connection with [login to view URL][[login to view URL]] while sending DATA command)

Nov 10 06:34:10 srv01 postfix/error[1934]: warning: mysql:/etc/postfix/[login to view URL]: table lookup problem

Nov 10 06:34:10 srv01 postfix/error[1934]: warning: 246993BE0CEB: flush service failure

Beceriler: Linux, PHP, Apache, Sistem Yöneticisi, Ubuntu

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İşveren Hakkında:
( 37 değerlendirme ) Friedberg, Germany

Proje NO: #22370409

Seçilen:

GisOnline

I'm emailing and smtp expert with over 10 years of experience. I'm also a server manager. As I see, your server got attacked and I can solve it for you. I'm expert in this field. I'm ready for work whenever you want b Daha Fazla

1 gün içinde %selectedBids___i_sum_sub_4%%project_currencyDetails_sign_sub_5% USD
(86 Değerlendirme)
5.9

Bu iş için 6 freelancer ortalamada $52 teklif veriyor

raj00565

Hello, Allow me to handle this email configuration error. I read through the job details extremely carefully and I am absolutely sure that would solve this error. I am an experienced DevOps engineer, I am well versed Daha Fazla

$40 USD in 2 gün içinde
(41 Değerlendirme)
6.3
SoftInt

Hallo, Postfix ist so eingestellt um die Domains/Emails für die er zuständig ist aus der Datenbank zu holen, der Login zu dieser schlägt aber fehl. Gruß, Thorsten

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(18 Değerlendirme)
5.5
nickdevops

Hello my name is Nikos and Im working on the Linux server administration field for the past 6 years. Over these years I worked for two web hosting companies as a Senior Administrator managing their servers & providing Daha Fazla

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(17 Değerlendirme)
4.4
sysadminspl

Hello I can take a look on it if you want however because its issue on production system I can't run automation on it so It will be manual check and fix job

$125 USD in 14 gün içinde
(12 Değerlendirme)
3.2
honneamise

Hi, I have extensive experience with Linux, ISPConfig and Postfix, I have been working with IT for over 20 years. I have used ISPConfig many times and can diagnose and fix your issue promptly.

1 gün içinde %bids___i_sum_sub_32%%project_currencyDetails_sign_sub_33% USD
(3 Değerlendirme)
2.3