Fixing HELO/rDNS Mismatch in MyVestaCP When Installed on Main Domain (Spamhaus Rejection)

Post Reply
User avatar
webxtek
Posts: 66
Joined: Wed Nov 18, 2020 7:43 pm
Been thanked: 2 times

I had an issue where Spamhaus rejected emails because my HELO didn’t match my reverse DNS (rDNS). I installed MyVestaCP on my main domain example.com (not a subdomain like mail.example.com), so Exim used example.com as the HELO, but my rDNS was mail.example.com. This mismatch caused rejections by servers like Spamhaus and AOL.

How I Fixed It
Backup the config first:

Code: Select all

cp /etc/exim4/exim4.conf.template /etc/exim4/exim4.conf.template.bak
.
  1. Configure Reverse DNS (rDNS/PTR) for IPv4 and IPv6
    It’s crucial to ensure your reverse DNS (PTR) records are correctly set for both IPv4 and IPv6, as this impacts email deliverability. In my case, using Hetzner, I configured both my IPv4 and IPv6 addresses to resolve to mail.mydomain.com. Log in to your Hetzner control panel (or your provider’s dashboard), go to the DNS settings for your server, and set the PTR records for both IPs to mail.yourdomain.com.
    Hetzner official tutorial: https://docs.hetzner.com/cloud/servers/ ... rver-rdns/
  2. Edit the Exim template file:

    Code: Select all

    nano /etc/exim4/exim4.conf.template
  3. In the global section (near the top, before the "ACL CONFIGURATION" block, after the DKIM settings), add:

    Code: Select all

    primary_hostname = mail.example.com
    Replace mail.example.com with your rDNS.
  4. Save, regenerate the config, and restart Exim:

    Code: Select all

    systemctl restart exim4
  5. Verify the HELO:

    Code: Select all

    exim -bh 127.0.0.1
    After the banner, type

    Code: Select all

    EHLO test
    . It should show

    Code: Select all

    250-mail.example.com Hello localhost [127.0.0.1]
    .
  6. Test by sending an email and checking logs:

    Code: Select all

    echo "Test email" | mail -s "Test" [email protected] -aFrom:[email protected]
tail -f /var/log/exim4/mainlog
    If delivered, check the email headers in Gmail ("Show original") for

    Code: Select all

    Received: from mail.example.com ...
    .
  7. For a full test, use: https://www.mail-tester.com/
--------
FULL CODE /etc/exim4/exim4.conf.template:

Code: Select all

######################################################################
#                                                                    #
#          Exim configuration file for Vesta Control Panel           #
#                                                                    #
######################################################################

SPAMASSASSIN = yes
SPAM_SCORE = 50
CLAMD =  yes

disable_ipv6=true
add_environment=<; PATH=/bin:/usr/bin
keep_environment=
smtputf8_advertise_hosts =

SRS_SECRET = ${readfile{/etc/exim4/srs.conf}}

#local_interfaces =  0.0.0.0
#smtp_active_hostname = ${lookup{$interface_address}lsearch{/etc/exim4/virtual/helo_data}{$value}}
#smtp_banner = "$smtp_active_hostname ESMTP $tod_full"

domainlist local_domains = dsearch;/etc/exim4/domains/
domainlist relay_to_domains = dsearch;/etc/exim4/domains/
hostlist relay_from_hosts = 127.0.0.1
hostlist whitelist = net-iplsearch;/etc/exim4/white-blocks.conf
hostlist spammers = net-iplsearch;/etc/exim4/spam-blocks.conf
no_local_from_check
untrusted_set_sender = *
acl_smtp_connect = acl_check_spammers
acl_smtp_mail = acl_check_mail
acl_smtp_rcpt = acl_check_rcpt
acl_smtp_data = acl_check_data
acl_smtp_mime = acl_check_mime

LIMIT_PER_EMAIL_ACCOUNT_MAX_RECIPIENTS = 50
LIMIT_PER_HOSTING_ACCOUNT_MAX_RECIPIENTS = 15
LIMIT_PER_EMAIL_ACCOUNT_MAX_SENT_EMAILS_PER_HOUR = 50
LIMIT_PER_HOSTING_ACCOUNT_MAX_SENT_EMAILS_PER_HOUR = 50

recipients_max = 150
recipients_max_reject = true

# log_selector = +smtp_connection
smtp_accept_max = 50
smtp_accept_max_per_host = 4

.ifdef SPAMASSASSIN
spamd_address = 127.0.0.1 783
.endif

.ifdef CLAMD
av_scanner = clamd: /var/run/clamav/clamd.ctl
.endif

tls_advertise_hosts = *
tls_certificate = /usr/local/vesta/ssl/certificate.crt
tls_privatekey = /usr/local/vesta/ssl/certificate.key

daemon_smtp_ports = 25 : 465 : 587 : 2525
tls_on_connect_ports = 465
never_users = root
host_lookup = *
rfc1413_hosts = *
rfc1413_query_timeout = 0s
ignore_bounce_errors_after = 2d
timeout_frozen_after = 7d

DKIM_DOMAIN = ${lc:${domain:$h_from:}}
DKIM_FILE = /etc/exim4/domains/${lookup{${lc:${domain:$h_from:}}}dsearch{/etc/exim4/domains/}}/dkim.pem
DKIM_PRIVATE_KEY = ${if exists{DKIM_FILE}{DKIM_FILE}{0}}

# Placeholder for primary_hostname (to be set dynamically by v-rebuild-exim4-config)
# primary_hostname = mail.domain.com

######################################################################
#                       ACL CONFIGURATION                            #
#         Specifies access control lists for incoming SMTP mail      #
######################################################################

acl_not_smtp = acl_not_smtp

begin acl

acl_not_smtp:
  deny message = Too many recipients, limit is $acl_c_max_recipients recipients
  set acl_c_max_recipients=${lookup{$authenticated_id}lsearch{/etc/exim4/limit_per_hosting_account_max_recipients}{$value}{LIMIT_PER_HOSTING_ACCOUNT_MAX_RECIPIENTS}}
  condition = ${if >{$rcpt_count}{$acl_c_max_recipients}}

  deny message = Hosting account is sending too many emails [limitlog]: deny / account / $authenticated_id / $sender_rate / $sender_rate_period [limit=$acl_c_limit_per_hour]
  set acl_c_limit_per_hour=${lookup{$authenticated_id}lsearch{/etc/exim4/limit_per_hosting_account_max_sent_emails_per_hour}{$value}{LIMIT_PER_HOSTING_ACCOUNT_MAX_SENT_EMAILS_PER_HOUR}}
  ratelimit = $acl_c_limit_per_hour / 1h / $authenticated_id

  warn ratelimit = 0 / 1h / strict / $authenticated_id
  set acl_c_limit_per_hour=${lookup{$authenticated_id}lsearch{/etc/exim4/limit_per_hosting_account_max_sent_emails_per_hour}{$value}{LIMIT_PER_HOSTING_ACCOUNT_MAX_SENT_EMAILS_PER_HOUR}}
  log_message = Sender rate [limitlog]: log / account / $authenticated_id / $sender_rate / $sender_rate_period [limit=$acl_c_limit_per_hour]

  warn    set acl_m3    = yes

  accept

acl_check_spammers:
  accept  hosts         = +whitelist

  drop    message       = Your host in blacklist on this server.
          log_message   = Host in blacklist
          hosts         = +spammers

  accept


acl_check_mail:
  deny    condition     = ${if eq{$sender_helo_name}{}}
          message       = HELO required before MAIL

  drop    !authenticated = *
          message       = Helo name contains an IP address (HELO was $sender_helo_name) and is not valid
          condition     = ${if match{$sender_helo_name}{\N((\d{1,3}[.-]\d{1,3}[.-]\d{1,3}[.-]\d{1,3})|([0-9a-f]{8})|([0-9A-F]{8}))\N}{yes}{no}}
          condition     = ${if match {${lookup dnsdb{>: defer_never,ptr=$sender_host_address}}\}{$sender_helo_name}{no}{yes}}
          delay         = 45s

  drop    !authenticated = *
          condition     = ${if isip{$sender_helo_name}}
          message       = Access denied - Invalid HELO name (See RFC2821 4.1.3)

  drop    !authenticated = *
          condition     = ${if eq{[$interface_address]}{$sender_helo_name}}
          message       = $interface_address is _my_ address

  accept


acl_check_rcpt:
  # Accept local connections (no authentication needed)
  accept  hosts         = :

  # Allow deliveries to local domains on port 25 without authentication
  accept  domains       = +local_domains
          verify        = recipient

  # Block unauthenticated sends on port 25 for NON-local domains (prevent relay)
  deny    message       = SMTP auth required for port 25
          condition     = ${if eq{$interface_port}{25}}
          !authenticated = *
          hosts         = !+relay_from_hosts
          domains       = !+local_domains

  # Recipient limit rules
  deny message = Too many recipients, limit is $acl_c_max_recipients recipients
  set acl_c_max_recipients=${lookup{$authenticated_id}lsearch{/etc/exim4/limit_per_email_account_max_recipients}{$value}{LIMIT_PER_EMAIL_ACCOUNT_MAX_RECIPIENTS}}
  condition = ${if >{$rcpt_count}{$acl_c_max_recipients}}

  deny message = Email account is sending too many emails [limitlog]: deny / email / $authenticated_id / $sender_rate / $sender_rate_period [limit=$acl_c_limit_per_hour]
  set acl_c_limit_per_hour=${lookup{$authenticated_id}lsearch{/etc/exim4/limit_per_email_account_max_sent_emails_per_hour}{$value}{LIMIT_PER_EMAIL_ACCOUNT_MAX_SENT_EMAILS_PER_HOUR}}
  ratelimit = $acl_c_limit_per_hour / 1h / $authenticated_id

  warn ratelimit = 0 / 1h / strict / $authenticated_id
  set acl_c_limit_per_hour=${lookup{$authenticated_id}lsearch{/etc/exim4/limit_per_email_account_max_sent_emails_per_hour}{$value}{LIMIT_PER_EMAIL_ACCOUNT_MAX_SENT_EMAILS_PER_HOUR}}
  log_message = Sender rate [limitlog]: log / email / $authenticated_id / $sender_rate / $sender_rate_period [limit=$acl_c_limit_per_hour]

  warn    set acl_m3    = no
  
  warn    !authenticated = *
          hosts          = !+relay_from_hosts
          condition     = ${if eq{${lookup{$domain}dsearch{/etc/exim4/domains/}}}{}{false}{true}}
          condition     = ${lookup{$local_part@$domain}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/aliases}{true}{false}}
          set acl_m3    = yes

  deny    message       = Restricted characters in address
          domains       = +local_domains
          local_parts   = ^[.] : ^.*[@%!/|]

  deny    message       = Restricted characters in address
          domains       = !+local_domains
          local_parts   = ^[./|] : ^.*[@%!] : ^.*/\\.\\./

  require verify        = sender

  accept  hosts         = +relay_from_hosts
          control       = submission

  accept  authenticated = *
          control       = submission/domain=

  deny    message       = Rejected because $sender_host_address is in a black list at $dnslist_domain\n$dnslist_text
          hosts         = !+whitelist
          dnslists      = ${readfile {/etc/exim4/dnsbl.conf}{:}}

  require message       = relay not permitted
          domains       = +local_domains : +relay_to_domains

  deny    message       = SMTP auth required
          sender_domains = +local_domains
          !authenticated = *

  require verify        = recipient

.ifdef CLAMD
  warn    set acl_m0    = no

  warn    condition     = ${if exists {/etc/exim4/domains/$domain/antivirus}{yes}{no}}
          set acl_m0    = yes
.endif

.ifdef SPAMASSASSIN
  warn    set acl_m1    = no

  warn    condition     = ${if exists {/etc/exim4/domains/$domain/antispam}{yes}{no}}
          set acl_m1    = yes
.endif

  accept


acl_check_data:

  deny senders = /etc/exim4/deny_senders

.ifdef CLAMD
  deny   message        = Message contains a virus ($malware_name) and has been rejected
         malware        = */defer_ok
         condition      = ${if eq{$acl_m0}{yes}{yes}{no}}
.endif

.ifdef SPAMASSASSIN
  warn   !authenticated = *
         hosts          = !+relay_from_hosts
         condition      = ${if < {$message_size}{600K}}
         condition      = ${if eq{$acl_m1}{yes}{yes}{no}}
         spam           = nobody:true/defer_ok
         add_header     = X-Spam-Score: $spam_score_int
         add_header     = X-Spam-Bar: $spam_bar
         add_header     = X-Spam-Report: $spam_report
         set acl_m2     = $spam_score_int

  warn   condition      = ${if !eq{$acl_m2}{} {yes}{no}}
         condition      = ${if >{$acl_m2}{SPAM_SCORE} {yes}{no}}
         add_header     = X-Spam-Status: Yes
         message        = SpamAssassin detected spam (from $sender_address to $recipients).
.endif

  accept


acl_check_mime:
  deny   message        = Blacklisted file extension detected
         condition      = ${if match {${lc:$mime_filename}}{\N(\.ade|\.adp|\.bat|\.chm|\.cmd|\.com|\.cpl|\.exe|\.hta|\.ins|\.isp|\.jse|\.lib|\.lnk|\.mde|\.msc|\.msp|\.mst|\.pif|\.scr|\.sct|\.shb|\.sys|\.vb|\.vbe|\.vbs|\.vxd|\.wsc|\.wsf|\.wsh|\.jar)$\N}{1}{0}}

  accept



######################################################################
#                   AUTHENTICATION CONFIGURATION                     #
######################################################################
begin authenticators

dovecot_plain:
  driver = dovecot
  public_name = PLAIN
  server_socket = /var/run/dovecot/auth-client
  server_set_id = $auth1

dovecot_login:
  driver = dovecot
  public_name = LOGIN
  server_socket = /var/run/dovecot/auth-client
  server_set_id = $auth1



######################################################################
#                      ROUTERS CONFIGURATION                         #
#               Specifies how addresses are handled                  #
######################################################################
begin routers

#smarthost:
#  driver = manualroute
#  domains = ! +local_domains
#  transport = remote_smtp
#  route_list = * smartrelay.vestacp.com
#  no_more
#  no_verify

dnslookup:
  driver = dnslookup
  # if outbound, and forwarding has been done, use an alternate transport
  domains = ! +local_domains
  transport = ${if eq {$local_part@$domain} \
                      {$original_local_part@$original_domain} \
                      {remote_smtp} {remote_forwarded_smtp}}
  no_more

localuser_spam:
  driver = accept
  transport = local_spam_delivery
  condition = ${if eq {${if match{$h_X-Spam-Status:}{\N^Yes\N}{yes}{no}}} {${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}{yes}{no_such_user}}}}

userforward:
  driver = redirect
  check_local_user
  file = $home/.forward
  require_files = ${local_part}:+${home}/.forward
  domains = +local_domains
  allow_filter
  no_verify
  no_expn
  check_ancestor
  file_transport = address_file
  pipe_transport = address_pipe
  reply_transport = address_reply

procmail:
  driver = accept
  check_local_user
  require_files = ${local_part}:+${home}/.procmailrc:/usr/bin/procmail
  transport = procmail
  no_verify

autoreplay:
  driver = accept
  require_files = /etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/autoreply.${local_part}.msg
  condition = ${if exists{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/autoreply.${local_part}.msg}{yes}{no}}
  retry_use_local_part
  transport = userautoreply
  unseen

inbound_srs:
    driver = redirect
    senders = :
    domains = +local_domains
    # detect inbound bounces which are converted to SRS, and decode them
    condition = ${if inbound_srs {$local_part} {SRS_SECRET}}
    data = $srs_recipient

inbound_srs_failure:
    driver = redirect
    senders = :
    domains = +local_domains
    # detect inbound bounces which look converted to SRS but are invalid
    condition = ${if inbound_srs {$local_part} {}}
    allow_fail
    data = :fail: Invalid SRS recipient address

aliases:
  driver = redirect
  headers_add = X-redirected: yes
  data = ${extract{1}{:}{${lookup{$local_part@$domain}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/aliases}}}}
  require_files = /etc/exim4/domains/$domain/aliases
  redirect_router = dnslookup
  pipe_transport = address_pipe
  unseen

localuser_fwd_only:
  driver = accept
  transport = devnull
  condition = ${if exists{/etc/exim4/domains/$domain/fwd_only}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/fwd_only}{true}{false}}}}

localuser:
  driver = accept
  transport = local_delivery
  condition = ${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}{true}{false}}

catchall:
  driver = redirect
  headers_add = X-redirected: yes
  require_files = /etc/exim4/domains/$domain/aliases
  data = ${extract{1}{:}{${lookup{*@$domain}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/aliases}}}}
  file_transport = local_delivery
  redirect_router = dnslookup

terminate_alias:
  driver = accept
  transport = devnull
  condition = ${lookup{$local_part@$domain}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/aliases}{true}{false}}



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

remote_smtp:
  driver = smtp
  #interface = ${if eq{$acl_m3}{yes}{FIRSTIP}{${lookup{$sender_address_domain}lsearch{/etc/exim4/virtual/interfaces} {$value}{SECONDIP}}}}
  #helo_data = "${if eq{$acl_m3}{yes}{FIRSTHOST}{${lookup{$sending_ip_address}lsearch{/etc/exim4/virtual/helo_data}{$value}{SECONDHOST}}}}"
  dkim_domain = DKIM_DOMAIN
  dkim_selector = mail
  dkim_private_key = DKIM_PRIVATE_KEY
  dkim_canon = relaxed
  dkim_strict = 0
  hosts_try_fastopen = 
  hosts_try_chunking = !93.188.3.0/24
  message_linelength_limit = 1G

remote_forwarded_smtp:
  driver = smtp
  dkim_domain = DKIM_DOMAIN
  dkim_selector = mail
  dkim_private_key = DKIM_PRIVATE_KEY
  dkim_canon = relaxed
  dkim_strict = 0
  hosts_try_fastopen = 
  hosts_try_chunking = !93.188.3.0/24
  message_linelength_limit = 1G
  # modify the envelope from, for mails that we forward
  max_rcpt = 1
  return_path = ${srs_encode {SRS_SECRET} {$return_path} {$original_domain}}

procmail:
  driver = pipe
  command = "/usr/bin/procmail -d $local_part"
  return_path_add
  delivery_date_add
  envelope_to_add
  user = $local_part
  initgroups
  return_output

local_delivery:
  driver = appendfile
  maildir_format
  maildir_use_size_file
  user = ${extract{2}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}
  group = mail
  create_directory
  directory_mode = 770
  mode = 660
  use_lockfile = no
  delivery_date_add
  envelope_to_add
  return_path_add
  directory = "${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}/mail/${lookup{$domain}dsearch{/etc/exim4/domains/}}/${lookup{$local_part}dsearch{${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}/mail/${lookup{$domain}dsearch{/etc/exim4/domains/}}}}"
  quota = ${extract{6}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}M
  quota_warn_threshold = 75%

local_spam_delivery:
  driver = appendfile
  maildir_format
  maildir_use_size_file
  user = ${extract{2}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}
  group = mail
  create_directory
  directory_mode = 770
  mode = 660
  use_lockfile = no
  delivery_date_add
  envelope_to_add
  return_path_add
  directory = "${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}/mail/${lookup{$domain}dsearch{/etc/exim4/domains/}}/${lookup{$local_part}dsearch{${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}/mail/${lookup{$domain}dsearch{/etc/exim4/domains/}}}}/.Spam"
  quota = ${extract{6}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}M
  quota_directory = "${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}/mail/${lookup{$domain}dsearch{/etc/exim4/domains/}}/${lookup{$local_part}dsearch{${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/passwd}}}}/mail/${lookup{$domain}dsearch{/etc/exim4/domains/}}}}"
  quota_warn_threshold = 75%

address_pipe:
  driver = pipe
  return_output

address_file:
  driver = appendfile
  delivery_date_add
  envelope_to_add
  return_path_add

address_reply:
  driver = autoreply

userautoreply:
  driver = autoreply
  file = /etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/autoreply.${extract{1}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/accounts}}}}.msg
  from = "${extract{1}{:}{${lookup{$local_part}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/accounts}}}}@${lookup{$domain}dsearch{/etc/exim4/domains/}}"
  headers = Content-Type: text/plain; charset=utf-8;\nContent-Transfer-Encoding: 8bit
  subject = "${if def:h_Subject: {Autoreply: \"${rfc2047:$h_Subject:}\"} {Autoreply Message}}"
  to = "${sender_address}"

devnull:
  driver = appendfile
  file = /dev/null



######################################################################
#                      RETRY CONFIGURATION                           #
######################################################################
begin retry

# Address or Domain    Error       Retries
# -----------------    -----       -------
*                      *           F,2h,15m; G,16h,1h,1.5; F,4d,6h



######################################################################
#                      REWRITE CONFIGURATION                         #
######################################################################
begin rewrite



######################################################################
Last edited by webxtek on Fri May 16, 2025 10:13 pm, edited 1 time in total.
Top
User avatar
webxtek
Posts: 66
Joined: Wed Nov 18, 2020 7:43 pm
Been thanked: 2 times

@myVesta, thanks for maintaining MyVestaCP! I had to manually set

Code: Select all

primary_hostname = mail.mydomain.com
in

Code: Select all

/etc/exim4/exim4.conf.template
to fix a HELO/rDNS mismatch (as in my post above). But I’m worried updates might overwrite this. Could we have a script that automatically detects the base domain from the hostname and sets

Code: Select all

primary_hostname
to mail.domain.com, even if the hostname has a subdomain like server.domain.com?

Here are two ideas:
  1. A robust shell script to extract the base domain and update the config:

    Code: Select all

    FULL_HOST=$(hostname -f); BASE_DOMAIN=$(echo $FULL_HOST | rev | cut -d'.' -f1-2 | rev); sed -i "/DKIM_PRIVATE_KEY/a primary_hostname = mail.$BASE_DOMAIN" /etc/exim4/exim4.conf.template; v-rebuild-exim4-config; systemctl restart exim4
    This handles cases like server.domain.com by extracting domain.com and setting mail.domain.com.
  2. Add a MyVestaCP hook that runs after updates, checks if

    Code: Select all

    primary_hostname
    is set, and if not, uses the first domain from

    Code: Select all

    /etc/exim4/domains/
    to set

    Code: Select all

    primary_hostname = mail.$DOMAIN
    .
What do you think? Could this be integrated into MyVestaCP to avoid manual edits?
Top
Post Reply

Return to “Mail”