Postfix setup catch-all email accounts using /etc/postfix/virtual

by on July 6, 2007 · 12 comments· LAST UPDATED July 6, 2007

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Q. How do I setup cacth-all email accounts under Postfix MTA? For example if an email send to me@domain.com, info@you.com and sales@you.com, should be sent to the same email address.

This is useful if anyone of user mistypes an email address when they send it to me, or just guesses at a valid email address, then they will likely get an error message from my server such as user / email mail box does not exist. So I wish to set up a "catch all" address

A. Mapping is done using /etc/postfix/virtual file.
# vi /etc/postfix/virtual
Append code as follows, replacing domain and emailusername with actual values:
@yourdomain.com emailusername

Save and close the file. Run following command:
# postmap /etc/postfix/virtual

Also make sure you have following line in /etc/postfix/main.cf file:
virtual_alias_maps = hash:/etc/postfix/virtual

If you just added above, line reload postfix:
# service postfix reload

Caution: if you set up a catch-all email address, you will likely receive more unsolicited (spam) email.

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{ 11 comments… read them below or add one }

1 omar August 6, 2008 at 9:02 am

I need to do something similar. I need the domain to forward emails to email@otherhost.com when emails sent to email@myhost.com. Is there a way to do that?
Thank you !

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2 nixCraft August 6, 2008 at 9:15 am

create .forward file in users home directory (for email@myhost.com user) and put email ID email@otherhost.com.

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3 sureshkumar February 26, 2009 at 12:23 pm

HI Vivek how can i Add multiple users for SMTP auth on postfix
/etc/postfix/sasl_passwd
[smtp.gmail.com]:587 example@domain.com:passswd
[smtp.gmail.com]:587 example1@domain.com:passswd1
but are not support gmail ….. can you help me please ….
in the virtual concepts support these concept………..am waiting for your reply…..

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4 Rob March 13, 2009 at 4:39 pm

Bump on sureshkumar’s question

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5 nixCraft March 13, 2009 at 5:24 pm

I don’t think so it is possible to use multiple gmail account. sasl_passwd totally depends upon first part (hostname) to determine correct username:password when there are multiple entries in sasl_passwd. You need unique hostname for multiple entries:

foo.com              you@foo.com
bar.com              you@bar.com
foo.in                  you@foo.in

However, you can use something as follows in /etc/postfix/sasl_passwd:

user1@gmail.com           username1:password1
user2@gmail.com           username2:password2

Next set, /etc/postfix/sender_relay:

user1@gmail.com           [smtp.gmail.com]:587
user2@gmail.com           [smtp.gmail.com]:587

Setup main.cf as follows:

smtp_sender_dependent_authentication = yes
sender_dependent_relayhost_maps = hash:/etc/postfix/sender_relay
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
relayhost = [smtp.gmail.com]:587

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6 Bob July 13, 2009 at 2:35 pm

What about if you have multiple domains and you all emails sent to bob@* to go to the bob user name but everything else to go to the jim username. How do you do that?

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7 sumit September 11, 2009 at 8:29 pm

I want to configure postfix virtual so that all emails goes to one address.

I can’t specify individual domain in virtual as I don’t know. Can anyone help me on this?

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8 Nd May 31, 2010 at 7:11 pm

Possible solution for those looking to catch everything (any domain):

Edit /etc/postfix/master.cf, change the ‘smtp’ declaration to:
smtp inet n – – – – smtpd -o content_filter=verp

And insert:
verp unix – n n – 10 pipe user=USER_HERE argv=PATH_HERE

Where ‘verp’ can be whatever you like, e.g. myfilter, mybouncehandler, etc.

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9 mark mason February 23, 2011 at 6:15 am

I want to allow for email forwarding to my customers so we all have ourcityname.com as our email addresses that forward to yahoo or gmail accounts. I can do this by hand on cpanel but I need a solution with an api to set up email forwards. Anybody know of a product?

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10 Sohail December 24, 2012 at 3:20 pm

Hello,
I want to dynamically create different mail id’s (user1@abc.com, user2@abc.com,….)for a user(abc) but not different users and not even aliases. whenever a user sends an email to newly generated mail id(user1@abc.com) it sholud get delivered to user(abc)’s mail box. Can anyone solve this up?

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11 omer January 13, 2014 at 4:19 pm

Thank you brother. İt’s so good.

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