501 5.1.7 Bad sender address syntax` in SMTP username with @domain.tld part · Issue #3181 · zammad/zammad · GitHub
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![SOLVED] 501+Syntax+error+-+line+too+long 0 0 32 0 1498 SMTP ...... But WHAT Line ? - Email Servers](https://content.spiceworksstatic.com/service.community/p/post_images/0000250375/59281876/attached_image/example.png "SOLVED] 501+Syntax+error+-+line+too+long 0 0 32 0 1498 SMTP ...... But WHAT Line ? - Email Servers")
SOLVED] 501+Syntax+error+-+line+too+long 0 0 32 0 1498 SMTP ...... But WHAT Line ? - Email Servers
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