Postfix rewriting subject for specific addresses

I would like to add a tag to all email messages sent to a particular address. I have tried to copy examples from the web, but can't seem to get it working.

Here's what I've done so far:

Add to /etc/postfix/transport
```
email@example.com rewrite:
```

Add to /etc/postfix/master.cf

rewrite unix - - n - - smtp
 -o header_checks=pcre:/etc/postfix/rewrite_headers

Create /etc/postfix/rewrite_headers containing

/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1

Where am I going wrong?

edited Mar 9 at 8:55

Rui F Ribeiro

41.6k1483141

asked Dec 29 '15 at 17:52

James Shields

14616

add a comment |

I would like to add a tag to all email messages sent to a particular address. I have tried to copy examples from the web, but can't seem to get it working.

Here's what I've done so far:

Add to /etc/postfix/transport
```
email@example.com rewrite:
```

Add to /etc/postfix/master.cf

rewrite unix - - n - - smtp
 -o header_checks=pcre:/etc/postfix/rewrite_headers

Create /etc/postfix/rewrite_headers containing

/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1

Where am I going wrong?

edited Mar 9 at 8:55

Rui F Ribeiro

41.6k1483141

asked Dec 29 '15 at 17:52

James Shields

14616

add a comment |

I would like to add a tag to all email messages sent to a particular address. I have tried to copy examples from the web, but can't seem to get it working.

Here's what I've done so far:

Add to /etc/postfix/transport
```
email@example.com rewrite:
```

Add to /etc/postfix/master.cf

rewrite unix - - n - - smtp
 -o header_checks=pcre:/etc/postfix/rewrite_headers

Create /etc/postfix/rewrite_headers containing

/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1

Where am I going wrong?

edited Mar 9 at 8:55

Rui F Ribeiro

41.6k1483141

asked Dec 29 '15 at 17:52

James Shields

14616

I would like to add a tag to all email messages sent to a particular address. I have tried to copy examples from the web, but can't seem to get it working.

Here's what I've done so far:

Add to /etc/postfix/transport
```
email@example.com rewrite:
```

Add to /etc/postfix/master.cf

rewrite unix - - n - - smtp
 -o header_checks=pcre:/etc/postfix/rewrite_headers

Create /etc/postfix/rewrite_headers containing

/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1

Where am I going wrong?

email postfix

edited Mar 9 at 8:55

Rui F Ribeiro

41.6k1483141

asked Dec 29 '15 at 17:52

James Shields

14616

edited Mar 9 at 8:55

Rui F Ribeiro

41.6k1483141

asked Dec 29 '15 at 17:52

James Shields

14616

edited Mar 9 at 8:55

Rui F Ribeiro

41.6k1483141

edited Mar 9 at 8:55

Rui F Ribeiro

41.6k1483141

edited Mar 9 at 8:55

Rui F Ribeiro

41.6k1483141

asked Dec 29 '15 at 17:52

James Shields

14616

asked Dec 29 '15 at 17:52

James Shields

14616

asked Dec 29 '15 at 17:52

James Shields

14616

add a comment |

1 Answer
1

active

oldest

votes

You should be able to do this without a custom transport, using built-in header checks.

Add to main.cf:

header_checks = pcre:/etc/postfix/rewrite_headers

Your rewrite_headers file will have the existing rule wrapped in a conditional:

if /^To: email@example.com$/i
/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1
endif

This should handle everything without the need for a transport config.

edited Jun 9 '18 at 2:36

answered Jan 19 '18 at 22:14

Murphy's Prophet

112

Is this also going to work if I want to change the sender of the mail for specific recipients?

– wie5Ooma
Jan 19 '18 at 22:46

Thanks for the tips. Unfortunately for me, my postfix config doesn't work as per documentation. header_checks doc says the header is checked in one bunch, not line by line. But this doesn't work accordingly to my config. So your tip doesn't work on my config.

– Luc-Olivier
May 25 '18 at 14:54

There was a mistake in my config example. header_checks was set to a file path, but as it contains regex rules the path needs to be prefixed with pcre:

– Murphy's Prophet
Jun 9 '18 at 2:37

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

You should be able to do this without a custom transport, using built-in header checks.

Add to main.cf:

header_checks = pcre:/etc/postfix/rewrite_headers

Your rewrite_headers file will have the existing rule wrapped in a conditional:

if /^To: email@example.com$/i
/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1
endif

This should handle everything without the need for a transport config.

edited Jun 9 '18 at 2:36

answered Jan 19 '18 at 22:14

Murphy's Prophet

112

Is this also going to work if I want to change the sender of the mail for specific recipients?

– wie5Ooma
Jan 19 '18 at 22:46

Thanks for the tips. Unfortunately for me, my postfix config doesn't work as per documentation. header_checks doc says the header is checked in one bunch, not line by line. But this doesn't work accordingly to my config. So your tip doesn't work on my config.

– Luc-Olivier
May 25 '18 at 14:54

There was a mistake in my config example. header_checks was set to a file path, but as it contains regex rules the path needs to be prefixed with pcre:

– Murphy's Prophet
Jun 9 '18 at 2:37

add a comment |

You should be able to do this without a custom transport, using built-in header checks.

Add to main.cf:

header_checks = pcre:/etc/postfix/rewrite_headers

Your rewrite_headers file will have the existing rule wrapped in a conditional:

if /^To: email@example.com$/i
/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1
endif

This should handle everything without the need for a transport config.

edited Jun 9 '18 at 2:36

answered Jan 19 '18 at 22:14

Murphy's Prophet

112

Is this also going to work if I want to change the sender of the mail for specific recipients?

– wie5Ooma
Jan 19 '18 at 22:46

Thanks for the tips. Unfortunately for me, my postfix config doesn't work as per documentation. header_checks doc says the header is checked in one bunch, not line by line. But this doesn't work accordingly to my config. So your tip doesn't work on my config.

– Luc-Olivier
May 25 '18 at 14:54

There was a mistake in my config example. header_checks was set to a file path, but as it contains regex rules the path needs to be prefixed with pcre:

– Murphy's Prophet
Jun 9 '18 at 2:37

add a comment |

You should be able to do this without a custom transport, using built-in header checks.

Add to main.cf:

header_checks = pcre:/etc/postfix/rewrite_headers

Your rewrite_headers file will have the existing rule wrapped in a conditional:

if /^To: email@example.com$/i
/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1
endif

This should handle everything without the need for a transport config.

edited Jun 9 '18 at 2:36

answered Jan 19 '18 at 22:14

Murphy's Prophet

112

You should be able to do this without a custom transport, using built-in header checks.

Add to main.cf:

header_checks = pcre:/etc/postfix/rewrite_headers

Your rewrite_headers file will have the existing rule wrapped in a conditional:

if /^To: email@example.com$/i
/^Subject: (.+)$/i REPLACE Subject: [Example tag] $1
endif

This should handle everything without the need for a transport config.

edited Jun 9 '18 at 2:36

answered Jan 19 '18 at 22:14

Murphy's Prophet

112

edited Jun 9 '18 at 2:36

answered Jan 19 '18 at 22:14

Murphy's Prophet

112

answered Jan 19 '18 at 22:14

Murphy's Prophet

112

answered Jan 19 '18 at 22:14

Murphy's Prophet

112

Is this also going to work if I want to change the sender of the mail for specific recipients?

– wie5Ooma
Jan 19 '18 at 22:46

Thanks for the tips. Unfortunately for me, my postfix config doesn't work as per documentation. header_checks doc says the header is checked in one bunch, not line by line. But this doesn't work accordingly to my config. So your tip doesn't work on my config.

– Luc-Olivier
May 25 '18 at 14:54

There was a mistake in my config example. header_checks was set to a file path, but as it contains regex rules the path needs to be prefixed with pcre:

– Murphy's Prophet
Jun 9 '18 at 2:37

add a comment |

Is this also going to work if I want to change the sender of the mail for specific recipients?

– wie5Ooma
Jan 19 '18 at 22:46

Thanks for the tips. Unfortunately for me, my postfix config doesn't work as per documentation. header_checks doc says the header is checked in one bunch, not line by line. But this doesn't work accordingly to my config. So your tip doesn't work on my config.

– Luc-Olivier
May 25 '18 at 14:54

There was a mistake in my config example. header_checks was set to a file path, but as it contains regex rules the path needs to be prefixed with pcre:

– Murphy's Prophet
Jun 9 '18 at 2:37

Is this also going to work if I want to change the sender of the mail for specific recipients?

– wie5Ooma
Jan 19 '18 at 22:46

Thanks for the tips. Unfortunately for me, my postfix config doesn't work as per documentation. header_checks doc says the header is checked in one bunch, not line by line. But this doesn't work accordingly to my config. So your tip doesn't work on my config.

– Luc-Olivier
May 25 '18 at 14:54

There was a mistake in my config example. header_checks was set to a file path, but as it contains regex rules the path needs to be prefixed with pcre:

– Murphy's Prophet
Jun 9 '18 at 2:37

add a comment |

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