Can not Send email - 550 Access denied - Invalid HELO name

[xminali]

Hi,
I'm trying to send out emails from Vesta/Roundcube but I keep on having an error message.

This message was created automatically by mail delivery software.

Error message
-----------------------------------
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

[email protected]
SMTP error from remote mail server after MAIL FROM:<[email protected]> SIZE=1732:
host xxxxx.org [119.81.xx.xx]: 550 Access denied - Invalid HELO name (See RFC2821 4.1.1.1)
---------------------------------

I tried to look for an answer on other forums but their all about Outlook.
Any help would be appreciated please.

Thanks

[imperio]

Hi,
show me result of this command

Code: Select all

hostname

[esteban]

Hi all.

I am new to Vesta CP and I am performing my first installation (Centos 7).

I have the same problem: I am able to receive emails but unable to send. I got almost the same error message:

Failed to set sender "[email protected]" (Access denied - Invalid HELO name (See RFC2821 4.1.3)).

When running the hostname command, the reply is: panel.mydomain.com

I have googled but have not been able to fix this. Can anyone please help me out?

Thanks in advance.

[esteban]

I just found the answer here: viewtopic.php?t=7410

Access denied - Invalid HELO name (See RFC2821 4.1.3)

Edit
vi /etc/exim4/exim4.conf.template

Comments lines
# drop condition = ${if isip{$sender_helo_name}}
# message = Access denied - Invalid HELO name (See RFC2821 4.1.3)

/etc/init.d/exim4 restart

As my server is running Centos, had to restart with

Code: Select all

systemctl restart exim

Worked as a charm ;)

[jordan.vrtanoski]

I experienced the same error message. After little investigation I have found that the user was logging in to the web mail client (Roundcube) trough the IP address of the mail server instead of logging in trough the DNS name. In such case, roundcube is sending the IP address as part of sender name in the HELO message. After the user logged in from the DNS, the problem had disappeared.

[osc2nuke]

I experienced the same error message. After little investigation I have found that the user was logging in to the web mail client (Roundcube) trough the IP address of the mail server instead of logging in trough the DNS name. In such case, roundcube is sending the IP address as part of sender name in the HELO message. After the user logged in from the DNS, the problem had disappeared.

That's the only good answer!

[danielz]

Try comment this in your EXIM.conf

######################################################################
# TRANSPORTS CONFIGURATION #
######################################################################
begin transports

remote_smtp:
driver = smtp
#helo_data = $sender_address_domain

[ivansmo]

I experienced the same error message. After little investigation I have found that the user was logging in to the web mail client (Roundcube) trough the IP address of the mail server instead of logging in trough the DNS name. In such case, roundcube is sending the IP address as part of sender name in the HELO message. After the user logged in from the DNS, the problem had disappeared.

This is my first post on this forum. I'm playing with CentOS7 for a while, and found out that Vesta CP is a best solution for me. Great support and easy to navigate and do stuff. I have been reading forum in a past few days and just now I had this problem. Finding solution here I just had to register and say thanks.

:D

[ivansmo]

I just found the answer here: viewtopic.php?t=7410

Access denied - Invalid HELO name (See RFC2821 4.1.3)

Edit
vi /etc/exim4/exim4.conf.template

Comments lines
# drop condition = ${if isip{$sender_helo_name}}
# message = Access denied - Invalid HELO name (See RFC2821 4.1.3)

/etc/init.d/exim4 restart

As my server is running Centos, had to restart with

Code: Select all

systemctl restart exim

Worked as a charm ;)

Try this method I'm using

Edit /exim.conf and find these lines

Code: Select all

######################################################################
#                      TRANSPORTS CONFIGURATION                      #
######################################################################
begin transports

remote_smtp:
  driver = smtp
  #helo_data = $sender_address_domain
  dkim_domain = DKIM_DOMAIN
  dkim_selector = mail
  dkim_private_key = DKIM_PRIVATE_KEY
  dkim_canon = relaxed
  dkim_strict = 0
  
  helo_data = hostname

Change hostname to your real CentOS hostname

EDIT: Now I see mine don't work with hostname (it is different than top level name domain). If that is your case, just write top level domain instead of hostname

[xayan123]

I just found the answer here: viewtopic.php?t=7410

Access denied - Invalid HELO name (See RFC2821 4.1.3)

Edit
vi /etc/exim4/exim4.conf.template

Comments lines
# drop condition = ${if isip{$sender_helo_name}}
# message = Access denied - Invalid HELO name (See RFC2821 4.1.3)

/etc/init.d/exim4 restart

As my server is running Centos, had to restart with

Code: Select all

systemctl restart exim

Worked as a charm ;)

This worked like a charm for me too. Kudos man!