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postfix can't receive mails but can send mails

Hi all,

Server on VM, OS - Ubuntu 1004 server 64bit
Host - Ubuntu 11.04 desktop 64bit
Orcle VirtualBox

I followed;
Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 11.10)
http://www.howtoforge.com/virtual-us...l-ubuntu-11.10

to build this server which will serve multiple domains. It can send mail but unables to receive mail.

$ tail /var/log/mail.log

Code:

Feb  9 10:04:43 ub1004ser02 postfix/qmgr[1809]: 3B0C0A009A: from=<somebody@yahoo.com>, size=2966, nrcpt=1 (queue active)

Feb  9 10:04:43 ub1004ser02 postfix/smtp[1880]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused

Feb  9 10:04:43 ub1004ser02 postfix/smtp[1880]: 3B0C0A009A: to=<sales@mydomain.com>, relay=none, delay=1136, delays=1136/0/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)

Feb  9 10:04:43 ub1004ser02 postfix/smtpd[1872]: connect from e-bs.regit.ru[91.190.232.8]

Feb  9 10:04:44 ub1004ser02 postfix/smtpd[1872]: NOQUEUE: reject: RCPT from e-bs.regit.ru[91.190.232.8]: 550 5.1.1 <mail@mydomain.com>: Recipient address rejected: User unknown in virtual mailbox table; from=<labelling@kneeplace.com> to=<mail@mydomain.com> proto=SMTP helo=<e-bs.regit.ru>

Feb  9 10:04:44 ub1004ser02 postfix/smtpd[1872]: lost connection after RCPT from e-bs.regit.ru[91.190.232.8]

Feb  9 10:04:44 ub1004ser02 postfix/smtpd[1872]: disconnect from e-bs.regit.ru[91.190.232.8]

Feb  9 10:08:04 ub1004ser02 postfix/anvil[1875]: statistics: max connection rate 1/60s for (smtp:206.72.127.11) at Feb  9 10:03:37

Feb  9 10:08:04 ub1004ser02 postfix/anvil[1875]: statistics: max connection count 1 for (smtp:206.72.127.11) at Feb  9 10:03:37

Feb  9 10:08:04 ub1004ser02 postfix/anvil[1875]: statistics: max cache size 1 at Feb  9 10:03:37

On server VM terminal
=====================
$ dig mail.mydomain.com

Code:



; <<>> DiG 9.7.0-P1 <<>> mail.mydomain.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 33735

;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0



;; QUESTION SECTION:

;mail.mydomain.com.              IN      A



;; AUTHORITY SECTION:

mydomain.com.            3599    IN      SOA    ns25.domaincontrol.com. dns.jomax.net. 2012020704 28800 7200 604800 3600



;; Query time: 19 msec

;; SERVER: 202.14.67.4#53(202.14.67.4) (ISP DNS)

;; WHEN: Thu Feb  9 10:16:27 2012

;; MSG SIZE  rcvd: 102

On host terminal
================

$ dig mail.mydomain.com

Code:



; <<>> DiG 9.7.3 <<>> mail.mydomain.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 49391

;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0



;; QUESTION SECTION:

;mail.mydomain.com.                IN        A



;; AUTHORITY SECTION:

mydomain.com.                3510        IN        SOA        ns25.domaincontrol.com. dns.jomax.net. 2012020704 28800 7200 604800 3600



;; Query time: 18 msec

;; SERVER: 202.14.67.4#53(202.14.67.4) (ISP DNS)

;; WHEN: Thu Feb  9 10:17:56 2012

;; MSG SIZE  rcvd: 102

$ nslookup xxx.xxx.xxx.xxx (fixed IP)

Code:

Server:        xxx.xxx.xxx.xxx (ISP DNS)

Address:        xxx.xxx.xxx.xxx #53 (ISP DNS)



** server can't find 178.213.232.220.in-addr.arpa.: NXDOMAIN

Bind9 is not installed. I'm running ISP DNS

Pls help. TIA

B.R.
satimis

Quote:

Originally Posted by satimis (Post 4597885)

Code:

Feb  9 10:04:43 ub1004ser02 postfix/qmgr[1809]: 3B0C0A009A: from=<somebody@yahoo.com>, size=2966, nrcpt=1 (queue active)

Feb  9 10:04:43 ub1004ser02 postfix/smtp[1880]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused

Feb  9 10:04:43 ub1004ser02 postfix/smtp[1880]: 3B0C0A009A: to=<sales@mydomain.com>, relay=none, delay=1136, delays=1136/0/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)

Feb  9 10:04:43 ub1004ser02 postfix/smtpd[1872]: connect from e-bs.regit.ru[91.190.232.8]

Feb  9 10:04:44 ub1004ser02 postfix/smtpd[1872]: NOQUEUE: reject: RCPT from e-bs.regit.ru[91.190.232.8]: 550 5.1.1 <mail@mydomain.com>: Recipient address rejected: User unknown in virtual mailbox table; from=<labelling@kneeplace.com> to=<mail@mydomain.com> proto=SMTP helo=<e-bs.regit.ru>

Feb  9 10:04:44 ub1004ser02 postfix/smtpd[1872]: lost connection after RCPT from e-bs.regit.ru[91.190.232.8]

Feb  9 10:04:44 ub1004ser02 postfix/smtpd[1872]: disconnect from e-bs.regit.ru[91.190.232.8]

Feb  9 10:08:04 ub1004ser02 postfix/anvil[1875]: statistics: max connection rate 1/60s for (smtp:206.72.127.11) at Feb  9 10:03:37

Feb  9 10:08:04 ub1004ser02 postfix/anvil[1875]: statistics: max connection count 1 for (smtp:206.72.127.11) at Feb  9 10:03:37

Feb  9 10:08:04 ub1004ser02 postfix/anvil[1875]: statistics: max cache size 1 at Feb  9 10:03:37

On server VM terminal
=====================
$ dig mail.mydomain.com[code]

; <<>> DiG 9.7.0-P1 <<>> mail.mydomain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 33735
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;mail.mydomain.com. IN A

;; AUTHORITY SECTION:
mydomain.com. 3599 IN SOA ns25.domaincontrol.com. dns.jomax.net. 2012020704 28800 7200 604800 3600

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1605 <-- look here for status

;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 4

;; QUESTION SECTION:

;www.mydomain.com. IN A

;; ANSWER SECTION:

www.mydomain.com. 54 IN A _IP_ <-- the answer

create your own dns

Postfix is a smtp server and is used to send mails and if you are unable to receive mails configure a dovecot server for pop3 and imap

secondly your DNS is not replying to mail.mydomain so check your DNS.

Quote:

Originally Posted by fritz001 (Post 4597911)

Thanks for your advice.

$ dig mydomain.com

Code:

; <<>> DiG 9.7.3 <<>> mydomain.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63214

;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 4



;; QUESTION SECTION:

;mydomain.com.                        IN        A



;; ANSWER SECTION:

mydomain.com.                3120        IN        A        xxx.xxx.xxx.xxx (fixed ip)



;; AUTHORITY SECTION:

mydomain.com.                3120        IN        NS        ns25.domaincontrol.com.

mydomain.com.                3120        IN        NS        ns26.domaincontrol.com.



;; ADDITIONAL SECTION:

ns25.domaincontrol.com.        55420        IN        A        216.69.185.13

ns25.domaincontrol.com.        55420        IN        AAAA        2607:f208:206::d

ns26.domaincontrol.com.        52969        IN        A        208.109.255.13

ns26.domaincontrol.com.        55420        IN        AAAA        2607:f208:302::d



;; Query time: 18 msec

;; SERVER: 192.168.0.1#53(192.168.0.1)

;; WHEN: Thu Feb  9 19:16:44 2012

;; MSG SIZE  rcvd: 185

$ dig ser01.mydomain.com (server hostname)

Code:

; <<>> DiG 9.7.3 <<>> ser01.mydomain.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41616

;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 4



;; QUESTION SECTION:

;ser01.mydomain.com.        IN        A



;; ANSWER SECTION:

ser01.mydomain.com. 3600        IN        A        xxx.xxx.xxx.xxx (fixed ip)



;; AUTHORITY SECTION:

mydomain.com.                3001        IN        NS        ns25.domaincontrol.com.

mydomain.com.                3001        IN        NS        ns26.domaincontrol.com.



;; ADDITIONAL SECTION:

ns25.domaincontrol.com.        55301        IN        A        216.69.185.13

ns25.domaincontrol.com.        55301        IN        AAAA        2607:f208:206::d

ns26.domaincontrol.com.        52850        IN        A        208.109.255.13

ns26.domaincontrol.com.        55301        IN        AAAA        2607:f208:302::d



;; Query time: 52 msec

;; SERVER: 192.168.0.1#53(192.168.0.1)

;; WHEN: Thu Feb  9 19:18:43 2012

;; MSG SIZE  rcvd: 197

Both above "ANSWER: 1"

On host of VirtualBox

$ cat /etc/hosts

Code:

127.0.0.1        ub1004        localhost.localdomain        localhost

::1        ub1004        localhost6.localdomain6        localhost6

#::1        ub1004        localhost6.localdomain6        localhost6

192.168.0.218        ser01.mydomain.com        ser01



# The following lines are desirable for IPv6 capable hosts

::1    localhost ip6-localhost ip6-loopback

fe00::0 ip6-localnet

ff00::0 ip6-mcastprefix

ff02::1 ip6-allnodes

ff02::2 ip6-allrouters

ff02::3 ip6-allhosts

sales@mail.mydomain.com is on MySQL mail database table.

B.R.
satimis

Quote:

Originally Posted by deep27ak (Post 4597933)

Postfix is a smtp server and is used to send mails and if you are unable to receive mails configure a dovecot server for pop3 and imap

Whether you meant adding dovecot server for pop3 to receive mails?? Let Postfix to send mails? Thanks

Quote:

secondly your DNS is not replying to mail.mydomain so check your DNS.

mail.mydomain is only on domains table of "mail" database.

B.R.
satimis

I meant postfix is a smtp server so just configuring your machine with postfix will not help you in receiving mails

configure a dovecot server for the same

Quote:

Originally Posted by deep27ak (Post 4597952)

I meant postfix is a smtp server so just configuring your machine with postfix will not help you in receiving mails

configure a dovecot server for the same

SMTP = protocol for SEND/RECEIVE MESSAGES !!

unable to receive mails means miss-config postfix

post here main.config + master.config

Quote:

Originally Posted by fritz001 (Post 4597975)

SMTP = protocol for SEND/RECEIVE MESSAGES !!

unable to receive mails means miss-config postfix

post here main.config + master.config

$ cat /etc/postfix/main.cf

Code:

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)

biff = no



# appending .domain is the MUA's job.

append_dot_mydomain = no



# Uncomment the next line to generate "delayed mail" warnings

#delay_warning_time = 4h



readme_directory = /usr/share/doc/postfix



# TLS parameters

smtpd_tls_cert_file = /etc/postfix/smtpd.cert

smtpd_tls_key_file = /etc/postfix/smtpd.key

smtpd_use_tls = yes

smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache

smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache



# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for

# information on enabling SSL in the smtp client.



myhostname = ser01.mydomain.com

alias_maps = hash:/etc/aliases

alias_database = hash:/etc/aliases

myorigin = /etc/mailname

mydestination = ser01.mydomain.com, localhost, localhost.localdomain

relayhost = 

mynetworks = 127.0.0.0/8

mailbox_size_limit = 0

recipient_delimiter = +

inet_interfaces = all

html_directory = /usr/share/doc/postfix/html

virtual_alias_domains = 

virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf

virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf

virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf

virtual_mailbox_base = /home/vmail

virtual_uid_maps = static:5000

virtual_gid_maps = static:5000

smtpd_sasl_auth_enable = yes

broken_sasl_auth_clients = yes

smtpd_sasl_authenticated_header = yes

smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination

transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf

virtual_create_maildirsize = yes

virtual_maildir_extended = yes

virtual_mailbox_limit_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailbox_limit_maps.cf

virtual_mailbox_limit_override = yes

virtual_maildir_limit_message = "The user you are trying to reach is over quota."

virtual_overquota_bounce = yes

proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps

content_filter = amavis:[127.0.0.1]:10024

receive_override_options = no_address_mappings

$ cat /etc/postfix/master.cf

Code:



# ==========================================================================

# service type  private unpriv  chroot  wakeup  maxproc command + args

#              (yes)  (yes)  (yes)  (never) (100)

# ==========================================================================

smtp      inet  n      -      -      -      -      smtpd



#628      inet  n      -      -      -      -      qmqpd

pickup    fifo  n      -      -      60      1      pickup

cleanup  unix  n      -      -      -      0      cleanup

qmgr      fifo  n      -      n      300    1      qmgr

#qmgr    fifo  n      -      -      300    1      oqmgr

tlsmgr    unix  -      -      -      1000?  1      tlsmgr

rewrite  unix  -      -      -      -      -      trivial-rewrite

bounce    unix  -      -      -      -      0      bounce

defer    unix  -      -      -      -      0      bounce

trace    unix  -      -      -      -      0      bounce

verify    unix  -      -      -      -      1      verify

flush    unix  n      -      -      1000?  0      flush

proxymap  unix  -      -      n      -      -      proxymap

proxywrite unix -      -      n      -      1      proxymap

smtp      unix  -      -      -      -      -      smtp

# When relaying mail as backup MX, disable fallback_relay to avoid MX loops

relay    unix  -      -      -      -      -      smtp

        -o smtp_fallback_relay=

#      -o smtp_helo_timeout=5 -o smtp_connect_timeout=5

showq    unix  n      -      -      -      -      showq

error    unix  -      -      -      -      -      error

retry    unix  -      -      -      -      -      error

discard  unix  -      -      -      -      -      discard

local    unix  -      n      n      -      -      local

virtual  unix  -      n      n      -      -      virtual

lmtp      unix  -      -      -      -      -      lmtp

anvil    unix  -      -      -      -      1      anvil

scache    unix  -      -      -      -      1      scache



# maildrop. See the Postfix MAILDROP_README file for details.

# Also specify in main.cf: maildrop_destination_recipient_limit=1

#

maildrop  unix  -      n      n      -      -      pipe

  flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}



# ====================================================================

#

# See the Postfix UUCP_README file for configuration details.

#

uucp      unix  -      n      n      -      -      pipe

  flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)

#

# Other external delivery methods.

#

ifmail    unix  -      n      n      -      -      pipe

  flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)

bsmtp    unix  -      n      n      -      -      pipe

  flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient

scalemail-backend unix  -      n      n      -      2      pipe

  flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}

mailman  unix  -      n      n      -      -      pipe

  flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py

  ${nexthop} ${user}



amavis unix - - - - 2 smtp

        -o smtp_data_done_timeout=1200

        -o smtp_send_xforward_command=yes



127.0.0.1:10025 inet n - - - - smtpd

        -o content_filter=

        -o local_recipient_maps=

        -o relay_recipient_maps=

        -o smtpd_restriction_classes=

        -o smtpd_client_restrictions=

        -o smtpd_helo_restrictions=

        -o smtpd_sender_restrictions=

        -o smtpd_recipient_restrictions=permit_mynetworks,reject

        -o mynetworks=127.0.0.0/8

        -o strict_rfc821_envelopes=yes

        -o receive_override_options=no_unknown_recipient_checks,no_header_body_checks

        -o smtpd_bind_address=127.0.0.1

satimis

@deep27ak dovecot is configured in case you want to enable clients to fetch mails from mail server

@TS it seem your host is not getting resolved when you dig for mail.domain it must reply you with proper answer i.e. it must reply then IP address for your mail.domain it's only then mails can reach your server. make sure DNS is giving reply i.e. ANSWER SECTION when you make a query for host name of your mail server. and as far as your configuration file(/etc/postfix/main.cf) is concern it seems ok to me.
ahh wait it seems you have already fixed DNS part! sorry you may ignore above part.

another thing I've seen that you have enabled "relayhost =" directive I think it is not necessary in case you want your server to accept mails. To the best of my knowledge relayhost is used for forwarding mails to another mail server you might try commenting out that line.

Thank you
regards

Quote:

Originally Posted by pix9 (Post 4598001)

Hi,

Thanks for your advice. Tried it.

1) comment out the line "relayhost="
2) restart /etc/postfix

sent a mail to sales@mydomain.com. Failed

$ tail /var/log/mail.log

Code:

Feb  9 21:25:38 ser01 postfix/qmgr[1564]: 3B0C0A009A: from=<somebody@yahoo.com>, size=2966, nrcpt=1 (queue active)

Feb  9 21:25:38 ser01 postfix/smtp[2037]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused

Feb  9 21:25:38 ser01 postfix/smtp[2038]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused

Feb  9 21:25:38 ser01 postfix/smtp[2037]: 3B99CA00C6: to=<sales@mydomain.com>, relay=none, delay=75296, delays=75296/0/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)

Feb  9 21:25:38 ser01 postfix/smtp[2038]: 3B0C0A009A: to=<sales@mydomain.com>, relay=none, delay=41991, delays=41991/0.01/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)

Feb  9 21:40:38 ser01 postfix/qmgr[1564]: EFF88A0097: from=<somebody@yahoo.com>, size=2970, nrcpt=1 (queue active)

Feb  9 21:40:38 ser01 postfix/smtp[2051]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused

Feb  9 21:40:38 ser01 postfix/smtp[2051]: EFF88A0097: to=<sales@mydomain.com>, relay=none, delay=8811, delays=8811/0/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)

Feb  9 21:47:05 ser01 postfix/master[1415]: terminating on signal 15

Feb  9 21:47:06 ser01 postfix/master[2296]: daemon started -- version 2.7.0, configuration /etc/postfix

Sent another mail to sales@ser01.mydomain.com. Still failed

$ tail /var/log/mail.log

Code:

Feb  9 21:49:00 ser01 postfix/smtpd[2333]: connect from nm27-vm0.bullet.mail.sp2.yahoo.com[98.139.91.232]

Feb  9 21:49:01 ser01 postfix/smtpd[2333]: 4ADEBA00A0: client=nm27-vm0.bullet.mail.sp2.yahoo.com[98.139.91.232]

Feb  9 21:49:01 ser01 postfix/cleanup[2339]: 4ADEBA00A0: message-id=<1328795278.12111.YahooMailNeo@web113216.mail.gq1.yahoo.com>

Feb  9 21:49:01 ser01 postfix/qmgr[2298]: 4ADEBA00A0: from=<somebody@yahoo.com>, size=2967, nrcpt=1 (queue active)

Feb  9 21:49:01 ser01 postfix/smtp[2340]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused

Feb  9 21:49:01 ser01 postfix/smtp[2340]: 4ADEBA00A0: to=<sales@mydomain.com>, relay=none, delay=0.89, delays=0.89/0/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)

Feb  9 21:49:02 ser01 postfix/smtpd[2333]: disconnect from nm27-vm0.bullet.mail.sp2.yahoo.com[98.139.91.232]

Feb  9 21:50:53 ser01 postfix/smtpd[2376]: connect from nm21-vm4.bullet.mail.ne1.yahoo.com[98.138.91.181]

Feb  9 21:50:54 ser01 postfix/smtpd[2376]: NOQUEUE: reject: RCPT from nm21-vm4.bullet.mail.ne1.yahoo.com[98.138.91.181]: 554 5.7.1 <sales@ser01.mydomain.com>: Relay access denied; from=<somebody@yahoo.com> to=<sales@ser01.mydomain.com> proto=SMTP helo=<nm21-vm4.bullet.mail.ne1.yahoo.com>

Feb  9 21:50:54 ser01 postfix/smtpd[2376]: disconnect from nm21-vm4.bullet.mail.ne1.yahoo.com[98.138.91.181]

On domain register website

Code:

Host        Points to

@        xxx.xxx.xxx.xxx (fixed ip)

ser01        xxx.xxx.xxx.xxx (fixed ip)



CNAME (Alias)

Host        Points to

e        ser01.mydomain.com

email        ser01.mydomain.com

imap        imap.secureserver.net

pop        ser01.mydomain.com

smtp        ser01.mydomain.com

webmail        ser01.mydomain.com

www        @



MX (Mail Exchanger)

Priority        Host        Points

30                @        mailstore1.secureserver.net

20                @        smtp.secureserver.net

10                @        ser01.mydomain.com

Whether change

Code:

email ser01.mydomain.com

Code:

email mail.mydomain.com

Code:

smtp ser01.mydomain.com

Code:

smtp mail.mydomain.com

can help? But I have to wait for 48hrs for the change to propagate.

Edit:

mysql> SELECT * from transport;

Code:

+-------------+-----------------------+

| domain      | transport            |

+-------------+-----------------------+

| mydomain.com | smtp:mail.mydomain.com |

+-------------+-----------------------+

1 row in set (0.00 sec)

mail.mydomain.com is on "transport" table

B.R.
satimis