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fix several email delivery errors that occure after delivery from crm vtiger

I have several mail delivery errors, when i send emails through my crm vtiger.

I use a plugin for email campaigns in vtiger.

The reasons for the errors are different, e.g. the email address is no longer valid.

There are about 3300 email addresses in the crm.

The job is to do all steps to avoid or minimize further delivery problems,

e.g. control email addresses, control entries in spam-tools like spamhouse....

here are some examples of delivery errors:


[login to view URL]@[login to view URL]:

SMTP error from remote server for RCPT TO command, host: [login to view URL] ([login to view URL]) reason: 550 5.7.1 <[login to view URL]@[login to view URL]>: Recipient address rejected: Mail appear

ed to be SPAM or forged. Ask your Mail/DNS-Administrator to correct HE

LO and DNS MX settings or to get removed from DNSBLs; please relay via

your ISP ([login to view URL])


The mail system

<y383122@[login to view URL]>: host [login to view URL][[login to view URL]] said:

454 4.7.1 <y383122@[login to view URL]>: Relay access denied (in reply to RCPT TO



The mail system

<martl3000@[login to view URL]>: host [login to view URL][[login to view URL]] said: 421

4.7.0 [TSS04] Messages from [login to view URL] temporarily deferred due to user

complaints -; see

[login to view URL] (in reply to MAIL FROM



<www.aon.913265012@[login to view URL]>:

[login to view URL] does not like recipient.

track-id=1556877657:3496:smarthub83:[login to view URL]

Remote host said: 554 mailbox not found

Giving up on



Skills: PHP, CRM, Email Handling, vTiger, Software Architecture

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About the Employer:
( 45 reviews ) Irschenberg, Germany

Project ID: #20774408

Awarded to:


Hello. I would like to help you with mail delivery errors issue. I have expeience. Please read my feedbaks. Thank you.

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