Re: email sent via dma is received in plain text without attachments

On 2025-08-22 09:48, John Levine wrote:

> According to Dale Scott <dale@dalescott.net>:
> 
>> -=-=-=-=-=-
>> 
>> Hi all, I'm hosting webERP, a PHP business web app, on FreeBSD 14.2
>> using PHP 8.2. webERP uses phpMail to send HTML-format emails with PDF
>> attachments. The server uses dma to send email to the SMTP2GO 
>> smarthost
>> for delivery. The trouble is that received email is text format 
>> instead
>> of HTML and missing the expected PDF attachment.
>> 
>> Any idea what could be causing this or what to do about it?
> 
> DMA does not do anything clever to the mail it handles.  If you're not
> getting the HTML and attachments, that's because the PHP script isn't
> adding them.  I suppose it's theoretically possible that SMTP2GO is
> stripping them but that seems rather unlikely.
> 

Thanks for your help John.

> When you say phpMail, do you mean the PHPMailer library, the built in
> PHP mail() function, or something else?

webERP uses PHPMailer which in the absence of a config flat specifiying 
an SMTP server (aka smarthost), the php mail() function will be used, 
passing the mail to the local MTA, which in my case is dma. The other 
developer does not know the details of what is hosting services provider 
is doing, only that mail is delivered and he is not specifying an SMTP 
server in webERP.

Since the other developer can receive email with attachments, I think I 
can assume webERP is correctly generating the mail. It seems possible 
dma is removing the multi-part content due to some error that is ignored 
on Linux.

My thinking is that I need to:

Check dma log (if one exists)
Check SMTP2GO logs
Run dma so that it generates logging (if possible)

Cheers,
Dale

Fyi, here is "show original" for a recent email, which should have been 
in HTML and should have had an attached PDF. It seems to my naieve eye 
that there is no HTML or attachment, and since this works for the other 
developer, I should be able to assume webERP is correctly generating the 
mail. It seems possible dma is removing the multi-part content due to 
some error that is ignored on Linux.


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