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On 18 December 2018 at 02:30 Adi Pircalabu via dovecot <
<a href="mailto:dovecot@dovecot.org">dovecot@dovecot.org</a>> wrote:
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On 2018-12-18 07:33, Ruud Voorjans wrote:
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Dear all,
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I'm running dovecot # 2.3.2.1 - Pigeonhole version 0.5.2 () - OS:
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Linux 4.18.0-12-generic x86_64 Ubuntu 18.10 with Submission.
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It works great except with apple mail (Iphone).
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I get an error with the MTA (postfix):
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""postfix/submission/smtpd[32552]: warning: non-SMTP command from
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mail.example.org [1][xx.xx.xx.xx]: Content-Transfer-Encoding: 7bit""
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with other mail-client(s) (Outlook (Desktop and Iphone app)) i have no
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problem and it proxy-sends the e-mail beautiful out to the recipient.
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Hardly anything to do with Dovecot. When it comes to email clients Apple
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Mail has been and is still one of the worst flops (no offence intended,
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just my opinion based on personal experience). If you can reliably
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reproduce it, try and log the raw SMTP conversation between Postfix and
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the client by enabling per IP debugging in Postfix:
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postconf -e "debug_peer_level = 20"
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postconf -e "debug_peer_list = xx.xx.xx.xx"
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postfix reload
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where xx.xx.xx.xx is the unlucky client IP address.
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Possibly some crappy SMTP PIPELINING implementation at the Apple end,
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who knows.
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--
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Adi Pircalabu
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It's not unconceivable that there are bugs in submission either. Can you provide doveconf -n and submission rawlogs? See https://wiki.dovecot.org/Submission for settings.
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---
<br>Aki Tuomi
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