I agree - I think the error might simply be misleading.
OpenSMTPd might think that the client wants to "pipeline" (sending SMTP
commands in batches instead of one by one, waiting for a reply for
each), b/c it received unexpected data.
I can confirm also, that I can send from an iPhone via OpenSMTPd, just
fine.
On Sat, Nov 02, 2024 at 09:08:02AM +0000, Zé Loff wrote:
On Fri, Nov 01, 2024 at 10:04:57PM -0700, bf...@0x.co wrote:
If you own an iphone you can select a photo and send it to an email address.
I have properly configured my iphone to use a mail account that is running on an
OpenSMTPd server - it's a very simple and standard SMTP host configuration in
iphone account settings. Nothing out of the ordinary.
When an email is sent with this configured account, on the opensmtpd server this
error is generated:
smtp bad-input result="500 5.5.1 Invalid command: Pipelining not supported"
There are no advanced settings on the iphone....there is no place to enable or
disable pipelining or anything of that sort.
Should I conclude that it is impossible to send email from an apple iphone to an
opensmtpd server ?
Thank you.
In my experience, this kind of error is TLS related. Double check if
the port and protocol settings -- namely STARTTLS vs. SSL/TLS and port
25 vs. port 465/587 -- on the iPhone match those on the server.
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