SMTP error

[otrssk]

I have set up OTRS to get tickets from customers only via e-mail and they can get their feedback only via e-mail.

I don't like the behavior when there's problem sending e-mail to customer:
- agent adds reply/solution to ticket and he can see his reply in web interface,
- but customer won't get the feedback due to SMTP error.

I find it inconsistent situation.
If there's a problem sending e-mail to customer, agent's reply should not be saved.

Is there a solution or workaround for this scenario?

[otrssk]

It seems my problem is SMTP module in Perl (SMTPS, AUTH DIGEST-MD5).
OTRS fails with bad username/password error. Haven't yet figured it out where enable AUTH PLAIN/LOGIN.
But using PHP test script with same parameters (SMTPS, AUTH DIGEST-MD5) results with success.
Weird.

[reneeb]

Can you enable debug mode of Net::SMTP?

[otrssk]

Can you enable debug mode of Net::SMTP?

Debug won't give more information. I have debug info from mail server which is identical as from debug of Net::SMTP.
I need to know where to change AUTH TYPE. I've already tried changing some code with no success.

[reneeb]

Does the webserver say in the EHLO response that it supports DIGEST-MD5?

Code: Select all

$ telnet mx.domain.tld 25
Trying 192.168.2.114...
Connected to mx.domain.tld.
Escape character is '^]'.
220 mx.domain.tld ESMTP Postfix
EHLO mx.domain.tld
250-mx.domain.tld
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH LOGIN PLAIN   #<- here it should say DIGEST-MD5
250-AUTH=LOGIN PLAIN  #<- here it should say DIGEST-MD5
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN

Net::SMTP (the module OTRS uses to send mails via SMTP) uses the output of the EHLO command to determine which authentication type should be used.

[otrssk]

Does the webserver say in the EHLO response that it supports DIGEST-MD5?

Server supports 250-AUTH PLAIN LOGIN DIGEST-MD5 CRAM-MD5 GSSAPI.
DIGEST-MD5 works with PHP script.

Credentials are definitely correct - I checked using "debugging" in SMTP.pm and via UnHide password plugin in Firefox.

Question is where and how I can change AUTH TYPE.

[reneeb]

https://metacpan.org/source/GBARR/libne ... TP.pm#L120

To enforce using DIGEST-MD5, you have to set $mechanisms to "DIGEST-MD5". But notice that this may be used in other programs, too (for the case you run other Perl applications that use Net::SMTP as well).

[otrssk]

I give up. Editing perl modules ended up with errors.

Is there a howto for Postfix (sending outbound e-mails)?
I was told sendmail does not support SMTP/SSL + AUTH.

[otrssk]

As workaround I set up Postfix.
Got away from that Perl hell.