postfix relay smtp authentication
Hi,
I have been succesfully running postfix on Sarge as a local mailserver
relaying all outbound mail (from multiple internal accounts) to my ISP.
However my ISP has just decided to require SMTP authentication.
I have set up SASL following the postfix documentation and the
authentication phase succeeds, *however* postfix does not include the
authenticated sender address in the AUTH section of the MAIL FROM
message and my ISP is still refusing the message :((
Looking at the source in src/smtp/smtp_proto.c:
/*
* We authenticate the local MTA only, but not the sender.
*/
#ifdef USE_SASL_AUTH
if (var_smtp_sasl_enable
&& (state->features & SMTP_FEATURE_AUTH)
&& state->sasl_passwd)
vstring_strcat(next_command, " AUTH=<>");
#endif
I have "fixed" this with the following patch to the postfix code:
--- postfix-2.1.5/src/smtp/smtp_proto.c 2006-12-04 22:08:23.000000000 +0100
+++ postfix-2.1.5/src/smtp/smtp_proto.c.new 2006-12-04
22:33:35.943911483 +0100
@@ -755,8 +755,11 @@
#ifdef USE_SASL_AUTH
if (var_smtp_sasl_enable
&& (state->features & SMTP_FEATURE_AUTH)
- && state->sasl_passwd)
- vstring_strcat(next_command, " AUTH=<>");
+ && state->sasl_passwd) {
+ // Patch MF 4/12/2006 Authenticate sender (for
Tele2...)
+ QUOTE_ADDRESS(state->scratch, request->sender);
+ vstring_sprintf_append(next_command, "
AUTH=<%s>", vstring_str(state->scratch));
+ }
#endif
next_state = SMTP_STATE_RCPT;
break;
This works BUT only for a single user since the postfix version in sarge
(2.1.5) doesn't implement the smtp_sender_dependent_authentication
option and my ISP actually wants the correct password for each email
address (not just a single one for all addresses associated with the
account.
I've tried similarly patching the etch version of postfix - I can build
the package but it won't install due to an unsatisified dependency on
lsb_base (> 3.0.6)
So does anyone have any better ideas of how to make this work?
Regards,
Martin
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