ADDITIONAL:
This appears to be a networking issue as we tried directly delivering the mail (no relay) which made no difference.
We also tried sending mail directly to a different SMTP server bypassing ours and had the same issue.
I'm assuming this is to do with MTU or similar? Wondering why...
Hi guys,
I've searched and searched and just can't figure this one out, it's driving me nuts!
To give you a general overview our sendmail box is relaying some messages to our host (mail.financial.ltd.uk) with attachments but not others. Size of the file doesn't seem to matter, some small ones...
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